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commit bash-20190104 snapshot

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Chet Ramey
2019-01-08 11:03:27 -05:00
parent 89b3a79dd4
commit 5cc55f2f73
32 changed files with 857 additions and 759 deletions
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CHANGES
+24
View File
@@ -1,3 +1,27 @@
This document details the changes between this version, bash-5.0-release, and
the previous version, bash-5.0-rc1.
1. Changes to Bash
a. Tilde expansion isn't performed on indexed array subscripts, even for
backwards compatibility.
b. The shell doesn't exit in posix mode if the eval builtin gets a parse
error when run by the command builtin.
c. Fixed a bug that caused a shell comment in an alias to not find the end
of the alias properly.
d. Reverted a change from April, 2018 that caused strings containing
backslashes to be flagged as glob patterns.
2. Changes to Readline
3. New Features in Bash
4. New Features in Readline
------------------------------------------------------------------------------
This document details the changes between this version, bash-5.0-rc1, and
the previous version, bash-5.0-beta2.
CHANGES-5.0
+24
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@@ -1,3 +1,27 @@
This document details the changes between this version, bash-5.0-release, and
the previous version, bash-5.0-rc1.
1. Changes to Bash
a. Tilde expansion isn't performed on indexed array subscripts, even for
backwards compatibility.
b. The shell doesn't exit in posix mode if the eval builtin gets a parse
error when run by the command builtin.
c. Fixed a bug that caused a shell comment in an alias to not find the end
of the alias properly.
d. Reverted a change from April, 2018 that caused strings containing
backslashes to be flagged as glob patterns.
2. Changes to Readline
3. New Features in Bash
4. New Features in Readline
------------------------------------------------------------------------------
This document details the changes between this version, bash-5.0-rc1, and
the previous version, bash-5.0-beta2.
CWRU/CWRU.chlog
+30
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@@ -4963,3 +4963,33 @@ lib/glob/glob_loop.c
- INTERNAL_GLOB_PATTERN_P: revert change from 4/27 that makes this
function return non-zero for a backslash in the string. Based on a
report from Tom Ryder <tom@sanctum.geek.nz>
[bash-5.0 frozen]
[bash-5.0 released]
1/6/2019
--------
execute_cmd.c
- execute_simple_command: catch all non-zero special builtin errors
(e.g. return not in a function) and make sure a non-interactive
posix-mode shell exits. Old code expected builtins to signal
internal fatal errors with code > 256. Fixes bug reported by
Robert Hailey <bash@osndok.com>
examples/loadables/basename.c
- make sure to include bashgetopt.h. Reported by Angel
<angel@16bits.net>
lib/malloc/malloc.c
- stdlib.h: include if botch isn't defined to provide a declaration
for abort()
hashlib.c,Makefile.in
- fixes to make hash library testing work for others from
Eduardo Bustamante <dualbus@gmail.com>
lib/readline/unicode.c
- u32toutf16: correct the second argument to be wchar_t *, and treat
it as such, even though it doesn't make a difference in practice.
Report and fix from Eduardo Bustamante <dualbus@gmail.com>
Makefile.in
+1 -1
View File
@@ -968,7 +968,7 @@ depends: force
#### PRIVATE TARGETS ####
hashtest: hashlib.c
$(CC) -DTEST_HASHING $(CCFLAGS) $(TEST_NBUCKETS) -o $@ $(srcdir)/hashlib.c xmalloc.o $(INTL_LIB)
$(CC) -DTEST_HASHING $(CCFLAGS) $(TEST_NBUCKETS) -o $@ $(srcdir)/hashlib.c xmalloc.o $(INTL_LIB) $(MALLOC_LIBRARY)
############################ DEPENDENCIES ###############################
configure
Vendored
+10 -10
View File
@@ -1,7 +1,7 @@
#! /bin/sh
# From configure.ac for Bash 5.0, version 5.005.
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.69 for bash 5.0-rc1.
# Generated by GNU Autoconf 2.69 for bash 5.0-maint.
#
# Report bugs to <bug-bash@gnu.org>.
#
@@ -581,8 +581,8 @@ MAKEFLAGS=
# Identity of this package.
PACKAGE_NAME='bash'
PACKAGE_TARNAME='bash'
PACKAGE_VERSION='5.0-rc1'
PACKAGE_STRING='bash 5.0-rc1'
PACKAGE_VERSION='5.0-maint'
PACKAGE_STRING='bash 5.0-maint'
PACKAGE_BUGREPORT='bug-bash@gnu.org'
PACKAGE_URL=''
@@ -1394,7 +1394,7 @@ if test "$ac_init_help" = "long"; then
# Omit some internal or obsolete options to make the list less imposing.
# This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF
\`configure' configures bash 5.0-rc1 to adapt to many kinds of systems.
\`configure' configures bash 5.0-maint to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]...
@@ -1459,7 +1459,7 @@ fi
if test -n "$ac_init_help"; then
case $ac_init_help in
short | recursive ) echo "Configuration of bash 5.0-rc1:";;
short | recursive ) echo "Configuration of bash 5.0-maint:";;
esac
cat <<\_ACEOF
@@ -1655,7 +1655,7 @@ fi
test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then
cat <<\_ACEOF
bash configure 5.0-rc1
bash configure 5.0-maint
generated by GNU Autoconf 2.69
Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2364,7 +2364,7 @@ cat >config.log <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
It was created by bash $as_me 5.0-rc1, which was
It was created by bash $as_me 5.0-maint, which was
generated by GNU Autoconf 2.69. Invocation command line was
$ $0 $@
@@ -2759,7 +2759,7 @@ ac_config_headers="$ac_config_headers config.h"
BASHVERS=5.0
RELSTATUS=rc1
RELSTATUS=maint
case "$RELSTATUS" in
alp*|bet*|dev*|rc*|releng*|maint*) DEBUG='-DDEBUG' MALLOC_DEBUG='-DMALLOC_DEBUG' ;;
@@ -16968,7 +16968,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
# report actual input values of CONFIG_FILES etc. instead of their
# values after options handling.
ac_log="
This file was extended by bash $as_me 5.0-rc1, which was
This file was extended by bash $as_me 5.0-maint, which was
generated by GNU Autoconf 2.69. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
@@ -17034,7 +17034,7 @@ _ACEOF
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
ac_cs_version="\\
bash config.status 5.0-rc1
bash config.status 5.0-maint
configured by $0, generated by GNU Autoconf 2.69,
with options \\"\$ac_cs_config\\"
configure.ac
+2 -2
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@@ -5,7 +5,7 @@ dnl report bugs to chet@po.cwru.edu
dnl
dnl Process this file with autoconf to produce a configure script.
# Copyright (C) 1987-2018 Free Software Foundation, Inc.
# Copyright (C) 1987-2019 Free Software Foundation, Inc.
#
# This program is free software: you can redistribute it and/or modify
@@ -24,7 +24,7 @@ dnl Process this file with autoconf to produce a configure script.
AC_REVISION([for Bash 5.0, version 5.005])dnl
define(bashvers, 5.0)
define(relstatus, rc1)
define(relstatus, maint)
AC_INIT([bash], bashvers-relstatus, [bug-bash@gnu.org])
doc/FAQ
+1 -1
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@@ -1,4 +1,4 @@
This is the Bash FAQ, version 4.14, for Bash version 4.4.
This is the Bash FAQ, version 4.15, for Bash version 5.0.
This document contains a set of frequently-asked questions concerning
Bash, the GNU Bourne-Again Shell. Bash is a freely-available command
doc/bash.0
+272 -271
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@@ -5504,321 +5504,322 @@ SSHHEELLLL BBUUIILLTTIINN CCOOMMMMAANNDDSS
aassssoocc__eexxppaanndd__oonnccee
If set, the shell suppresses multiple evaluation of
associative array subscripts during arithmetic expres-
sion evaluation and while executing builtins that can
perform variable assignments.
aauuttooccdd If set, a command name that is the name of a directory
is executed as if it were the argument to the ccdd com-
sion evaluation, while executing builtins that can per-
form variable assignments, and while executing builtins
that perform array dereferencing.
aauuttooccdd If set, a command name that is the name of a directory
is executed as if it were the argument to the ccdd com-
mand. This option is only used by interactive shells.
ccddaabbllee__vvaarrss
If set, an argument to the ccdd builtin command that is
not a directory is assumed to be the name of a variable
If set, an argument to the ccdd builtin command that is
not a directory is assumed to be the name of a variable
whose value is the directory to change to.
ccddssppeellll If set, minor errors in the spelling of a directory com-
ponent in a ccdd command will be corrected. The errors
ponent in a ccdd command will be corrected. The errors
checked for are transposed characters, a missing charac-
ter, and one character too many. If a correction is
found, the corrected filename is printed, and the com-
mand proceeds. This option is only used by interactive
ter, and one character too many. If a correction is
found, the corrected filename is printed, and the com-
mand proceeds. This option is only used by interactive
shells.
cchheecckkhhaasshh
If set, bbaasshh checks that a command found in the hash ta-
ble exists before trying to execute it. If a hashed
command no longer exists, a normal path search is per-
ble exists before trying to execute it. If a hashed
command no longer exists, a normal path search is per-
formed.
cchheecckkjjoobbss
If set, bbaasshh lists the status of any stopped and running
jobs before exiting an interactive shell. If any jobs
jobs before exiting an interactive shell. If any jobs
are running, this causes the exit to be deferred until a
second exit is attempted without an intervening command
(see JJOOBB CCOONNTTRROOLL above). The shell always postpones
second exit is attempted without an intervening command
(see JJOOBB CCOONNTTRROOLL above). The shell always postpones
exiting if any jobs are stopped.
cchheecckkwwiinnssiizzee
If set, bbaasshh checks the window size after each external
(non-builtin) command and, if necessary, updates the
values of LLIINNEESS and CCOOLLUUMMNNSS. This option is enabled by
If set, bbaasshh checks the window size after each external
(non-builtin) command and, if necessary, updates the
values of LLIINNEESS and CCOOLLUUMMNNSS. This option is enabled by
default.
ccmmddhhiisstt If set, bbaasshh attempts to save all lines of a multiple-
line command in the same history entry. This allows
easy re-editing of multi-line commands. This option is
enabled by default, but only has an effect if command
ccmmddhhiisstt If set, bbaasshh attempts to save all lines of a multiple-
line command in the same history entry. This allows
easy re-editing of multi-line commands. This option is
enabled by default, but only has an effect if command
history is enabled, as described above under HHIISSTTOORRYY.
ccoommppaatt3311
If set, bbaasshh changes its behavior to that of version 3.1
with respect to quoted arguments to the [[[[ conditional
with respect to quoted arguments to the [[[[ conditional
command's ==~~ operator and locale-specific string compar-
ison when using the [[[[ conditional command's << and >>
operators. Bash versions prior to bash-4.1 use ASCII
ison when using the [[[[ conditional command's << and >>
operators. Bash versions prior to bash-4.1 use ASCII
collation and _s_t_r_c_m_p(3); bash-4.1 and later use the cur-
rent locale's collation sequence and _s_t_r_c_o_l_l(3).
ccoommppaatt3322
If set, bbaasshh changes its behavior to that of version 3.2
with respect to locale-specific string comparison when
using the [[[[ conditional command's << and >> operators
(see previous item) and the effect of interrupting a
command list. Bash versions 3.2 and earlier continue
with the next command in the list after one terminates
with respect to locale-specific string comparison when
using the [[[[ conditional command's << and >> operators
(see previous item) and the effect of interrupting a
command list. Bash versions 3.2 and earlier continue
with the next command in the list after one terminates
due to an interrupt.
ccoommppaatt4400
If set, bbaasshh changes its behavior to that of version 4.0
with respect to locale-specific string comparison when
using the [[[[ conditional command's << and >> operators
(see description of ccoommppaatt3311) and the effect of inter-
rupting a command list. Bash versions 4.0 and later
interrupt the list as if the shell received the inter-
rupt; previous versions continue with the next command
with respect to locale-specific string comparison when
using the [[[[ conditional command's << and >> operators
(see description of ccoommppaatt3311) and the effect of inter-
rupting a command list. Bash versions 4.0 and later
interrupt the list as if the shell received the inter-
rupt; previous versions continue with the next command
in the list.
ccoommppaatt4411
If set, bbaasshh, when in _p_o_s_i_x _m_o_d_e, treats a single quote
in a double-quoted parameter expansion as a special
character. The single quotes must match (an even num-
ber) and the characters between the single quotes are
considered quoted. This is the behavior of posix mode
through version 4.1. The default bash behavior remains
If set, bbaasshh, when in _p_o_s_i_x _m_o_d_e, treats a single quote
in a double-quoted parameter expansion as a special
character. The single quotes must match (an even num-
ber) and the characters between the single quotes are
considered quoted. This is the behavior of posix mode
through version 4.1. The default bash behavior remains
as in previous versions.
ccoommppaatt4422
If set, bbaasshh does not process the replacement string in
the pattern substitution word expansion using quote
If set, bbaasshh does not process the replacement string in
the pattern substitution word expansion using quote
removal.
ccoommppaatt4433
If set, bbaasshh does not print a warning message if an
attempt is made to use a quoted compound array assign-
ment as an argument to ddeeccllaarree, makes word expansion
errors non-fatal errors that cause the current command
to fail (the default behavior is to make them fatal
If set, bbaasshh does not print a warning message if an
attempt is made to use a quoted compound array assign-
ment as an argument to ddeeccllaarree, makes word expansion
errors non-fatal errors that cause the current command
to fail (the default behavior is to make them fatal
errors that cause the shell to exit), and does not reset
the loop state when a shell function is executed (this
allows bbrreeaakk or ccoonnttiinnuuee in a shell function to affect
the loop state when a shell function is executed (this
allows bbrreeaakk or ccoonnttiinnuuee in a shell function to affect
loops in the caller's context).
ccoommppaatt4444
If set, bbaasshh saves the positional parameters to
If set, bbaasshh saves the positional parameters to
BASH_ARGV and BASH_ARGC before they are used, regardless
of whether or not extended debugging mode is enabled.
ccoommpplleettee__ffuullllqquuoottee
If set, bbaasshh quotes all shell metacharacters in file-
names and directory names when performing completion.
If set, bbaasshh quotes all shell metacharacters in file-
names and directory names when performing completion.
If not set, bbaasshh removes metacharacters such as the dol-
lar sign from the set of characters that will be quoted
in completed filenames when these metacharacters appear
in shell variable references in words to be completed.
This means that dollar signs in variable names that
expand to directories will not be quoted; however, any
dollar signs appearing in filenames will not be quoted,
either. This is active only when bash is using back-
slashes to quote completed filenames. This variable is
set by default, which is the default bash behavior in
lar sign from the set of characters that will be quoted
in completed filenames when these metacharacters appear
in shell variable references in words to be completed.
This means that dollar signs in variable names that
expand to directories will not be quoted; however, any
dollar signs appearing in filenames will not be quoted,
either. This is active only when bash is using back-
slashes to quote completed filenames. This variable is
set by default, which is the default bash behavior in
versions through 4.2.
ddiirreexxppaanndd
If set, bbaasshh replaces directory names with the results
of word expansion when performing filename completion.
This changes the contents of the readline editing buf-
fer. If not set, bbaasshh attempts to preserve what the
If set, bbaasshh replaces directory names with the results
of word expansion when performing filename completion.
This changes the contents of the readline editing buf-
fer. If not set, bbaasshh attempts to preserve what the
user typed.
ddiirrssppeellll
If set, bbaasshh attempts spelling correction on directory
names during word completion if the directory name ini-
If set, bbaasshh attempts spelling correction on directory
names during word completion if the directory name ini-
tially supplied does not exist.
ddoottgglloobb If set, bbaasshh includes filenames beginning with a `.' in
the results of pathname expansion. The filenames ````..''''
and ````....'''' must always be matched explicitly, even if
ddoottgglloobb If set, bbaasshh includes filenames beginning with a `.' in
the results of pathname expansion. The filenames ````..''''
and ````....'''' must always be matched explicitly, even if
ddoottgglloobb is set.
eexxeeccffaaiill
If set, a non-interactive shell will not exit if it can-
not execute the file specified as an argument to the
eexxeecc builtin command. An interactive shell does not
not execute the file specified as an argument to the
eexxeecc builtin command. An interactive shell does not
exit if eexxeecc fails.
eexxppaanndd__aalliiaasseess
If set, aliases are expanded as described above under
If set, aliases are expanded as described above under
AALLIIAASSEESS. This option is enabled by default for interac-
tive shells.
eexxttddeebbuugg
If set at shell invocation, arrange to execute the
debugger profile before the shell starts, identical to
the ----ddeebbuuggggeerr option. If set after invocation, behav-
If set at shell invocation, arrange to execute the
debugger profile before the shell starts, identical to
the ----ddeebbuuggggeerr option. If set after invocation, behav-
ior intended for use by debuggers is enabled:
11.. The --FF option to the ddeeccllaarree builtin displays the
source file name and line number corresponding to
each function name supplied as an argument.
22.. If the command run by the DDEEBBUUGG trap returns a
non-zero value, the next command is skipped and
22.. If the command run by the DDEEBBUUGG trap returns a
non-zero value, the next command is skipped and
not executed.
33.. If the command run by the DDEEBBUUGG trap returns a
value of 2, and the shell is executing in a sub-
routine (a shell function or a shell script exe-
cuted by the .. or ssoouurrccee builtins), the shell
33.. If the command run by the DDEEBBUUGG trap returns a
value of 2, and the shell is executing in a sub-
routine (a shell function or a shell script exe-
cuted by the .. or ssoouurrccee builtins), the shell
simulates a call to rreettuurrnn.
44.. BBAASSHH__AARRGGCC and BBAASSHH__AARRGGVV are updated as described
44.. BBAASSHH__AARRGGCC and BBAASSHH__AARRGGVV are updated as described
in their descriptions above.
55.. Function tracing is enabled: command substitu-
55.. Function tracing is enabled: command substitu-
tion, shell functions, and subshells invoked with
(( _c_o_m_m_a_n_d )) inherit the DDEEBBUUGG and RREETTUURRNN traps.
66.. Error tracing is enabled: command substitution,
shell functions, and subshells invoked with ((
66.. Error tracing is enabled: command substitution,
shell functions, and subshells invoked with ((
_c_o_m_m_a_n_d )) inherit the EERRRR trap.
eexxttgglloobb If set, the extended pattern matching features described
above under PPaatthhnnaammee EExxppaannssiioonn are enabled.
eexxttqquuoottee
If set, $$'_s_t_r_i_n_g' and $$"_s_t_r_i_n_g" quoting is performed
within $${{_p_a_r_a_m_e_t_e_r}} expansions enclosed in double
If set, $$'_s_t_r_i_n_g' and $$"_s_t_r_i_n_g" quoting is performed
within $${{_p_a_r_a_m_e_t_e_r}} expansions enclosed in double
quotes. This option is enabled by default.
ffaaiillgglloobb
If set, patterns which fail to match filenames during
If set, patterns which fail to match filenames during
pathname expansion result in an expansion error.
ffoorrccee__ffiiggnnoorree
If set, the suffixes specified by the FFIIGGNNOORREE shell
variable cause words to be ignored when performing word
If set, the suffixes specified by the FFIIGGNNOORREE shell
variable cause words to be ignored when performing word
completion even if the ignored words are the only possi-
ble completions. See SSHHEELLLL VVAARRIIAABBLLEESS above for a
description of FFIIGGNNOORREE. This option is enabled by
description of FFIIGGNNOORREE. This option is enabled by
default.
gglloobbaasscciiiirraannggeess
If set, range expressions used in pattern matching
bracket expressions (see PPaatttteerrnn MMaattcchhiinngg above) behave
as if in the traditional C locale when performing com-
If set, range expressions used in pattern matching
bracket expressions (see PPaatttteerrnn MMaattcchhiinngg above) behave
as if in the traditional C locale when performing com-
parisons. That is, the current locale's collating
sequence is not taken into account, so bb will not col-
late between AA and BB, and upper-case and lower-case
sequence is not taken into account, so bb will not col-
late between AA and BB, and upper-case and lower-case
ASCII characters will collate together.
gglloobbssttaarr
If set, the pattern **** used in a pathname expansion con-
text will match all files and zero or more directories
and subdirectories. If the pattern is followed by a //,
text will match all files and zero or more directories
and subdirectories. If the pattern is followed by a //,
only directories and subdirectories match.
ggnnuu__eerrrrffmmtt
If set, shell error messages are written in the standard
GNU error message format.
hhiissttaappppeenndd
If set, the history list is appended to the file named
by the value of the HHIISSTTFFIILLEE variable when the shell
If set, the history list is appended to the file named
by the value of the HHIISSTTFFIILLEE variable when the shell
exits, rather than overwriting the file.
hhiissttrreeeeddiitt
If set, and rreeaaddlliinnee is being used, a user is given the
If set, and rreeaaddlliinnee is being used, a user is given the
opportunity to re-edit a failed history substitution.
hhiissttvveerriiffyy
If set, and rreeaaddlliinnee is being used, the results of his-
tory substitution are not immediately passed to the
shell parser. Instead, the resulting line is loaded
If set, and rreeaaddlliinnee is being used, the results of his-
tory substitution are not immediately passed to the
shell parser. Instead, the resulting line is loaded
into the rreeaaddlliinnee editing buffer, allowing further modi-
fication.
hhoossttccoommpplleettee
If set, and rreeaaddlliinnee is being used, bbaasshh will attempt to
perform hostname completion when a word containing a @@
is being completed (see CCoommpplleettiinngg under RREEAADDLLIINNEE
perform hostname completion when a word containing a @@
is being completed (see CCoommpplleettiinngg under RREEAADDLLIINNEE
above). This is enabled by default.
hhuuppoonneexxiitt
If set, bbaasshh will send SSIIGGHHUUPP to all jobs when an inter-
active login shell exits.
iinnhheerriitt__eerrrreexxiitt
If set, command substitution inherits the value of the
eerrrreexxiitt option, instead of unsetting it in the subshell
environment. This option is enabled when _p_o_s_i_x _m_o_d_e is
If set, command substitution inherits the value of the
eerrrreexxiitt option, instead of unsetting it in the subshell
environment. This option is enabled when _p_o_s_i_x _m_o_d_e is
enabled.
iinntteerraaccttiivvee__ccoommmmeennttss
If set, allow a word beginning with ## to cause that word
and all remaining characters on that line to be ignored
in an interactive shell (see CCOOMMMMEENNTTSS above). This
and all remaining characters on that line to be ignored
in an interactive shell (see CCOOMMMMEENNTTSS above). This
option is enabled by default.
llaassttppiippee
If set, and job control is not active, the shell runs
If set, and job control is not active, the shell runs
the last command of a pipeline not executed in the back-
ground in the current shell environment.
lliitthhiisstt If set, and the ccmmddhhiisstt option is enabled, multi-line
lliitthhiisstt If set, and the ccmmddhhiisstt option is enabled, multi-line
commands are saved to the history with embedded newlines
rather than using semicolon separators where possible.
llooccaallvvaarr__iinnhheerriitt
If set, local variables inherit the value and attributes
of a variable of the same name that exists at a previous
scope before any new value is assigned. The nameref
scope before any new value is assigned. The nameref
attribute is not inherited.
llooccaallvvaarr__uunnsseett
If set, calling uunnsseett on local variables in previous
function scopes marks them so subsequent lookups find
them unset until that function returns. This is identi-
cal to the behavior of unsetting local variables at the
If set, calling uunnsseett on local variables in previous
function scopes marks them so subsequent lookups find
them unset until that function returns. This is identi-
cal to the behavior of unsetting local variables at the
current function scope.
llooggiinn__sshheellll
The shell sets this option if it is started as a login
shell (see IINNVVOOCCAATTIIOONN above). The value may not be
The shell sets this option if it is started as a login
shell (see IINNVVOOCCAATTIIOONN above). The value may not be
changed.
mmaaiillwwaarrnn
If set, and a file that bbaasshh is checking for mail has
been accessed since the last time it was checked, the
message ``The mail in _m_a_i_l_f_i_l_e has been read'' is dis-
If set, and a file that bbaasshh is checking for mail has
been accessed since the last time it was checked, the
message ``The mail in _m_a_i_l_f_i_l_e has been read'' is dis-
played.
nnoo__eemmppttyy__ccmmdd__ccoommpplleettiioonn
If set, and rreeaaddlliinnee is being used, bbaasshh will not
If set, and rreeaaddlliinnee is being used, bbaasshh will not
attempt to search the PPAATTHH for possible completions when
completion is attempted on an empty line.
nnooccaasseegglloobb
If set, bbaasshh matches filenames in a case-insensitive
If set, bbaasshh matches filenames in a case-insensitive
fashion when performing pathname expansion (see PPaatthhnnaammee
EExxppaannssiioonn above).
nnooccaasseemmaattcchh
If set, bbaasshh matches patterns in a case-insensitive
If set, bbaasshh matches patterns in a case-insensitive
fashion when performing matching while executing ccaassee or
[[[[ conditional commands, when performing pattern substi-
tution word expansions, or when filtering possible com-
tution word expansions, or when filtering possible com-
pletions as part of programmable completion.
nnuullllgglloobb
If set, bbaasshh allows patterns which match no files (see
PPaatthhnnaammee EExxppaannssiioonn above) to expand to a null string,
If set, bbaasshh allows patterns which match no files (see
PPaatthhnnaammee EExxppaannssiioonn above) to expand to a null string,
rather than themselves.
pprrooggccoommpp
If set, the programmable completion facilities (see PPrroo--
ggrraammmmaabbllee CCoommpplleettiioonn above) are enabled. This option is
enabled by default.
pprrooggccoommpp__aalliiaass
If set, and programmable completion is enabled, bbaasshh
treats a command name that doesn't have any completions
as a possible alias and attempts alias expansion. If it
has an alias, bbaasshh attempts programmable completion
using the command word resulting from the expanded
If set, and programmable completion is enabled, bbaasshh
treats a command name that doesn't have any completions
as a possible alias and attempts alias expansion. If it
has an alias, bbaasshh attempts programmable completion
using the command word resulting from the expanded
alias.
pprroommppttvvaarrss
If set, prompt strings undergo parameter expansion, com-
mand substitution, arithmetic expansion, and quote
removal after being expanded as described in PPRROOMMPPTTIINNGG
mand substitution, arithmetic expansion, and quote
removal after being expanded as described in PPRROOMMPPTTIINNGG
above. This option is enabled by default.
rreessttrriicctteedd__sshheellll
The shell sets this option if it is started in
The shell sets this option if it is started in
restricted mode (see RREESSTTRRIICCTTEEDD SSHHEELLLL below). The value
may not be changed. This is not reset when the startup
files are executed, allowing the startup files to dis-
may not be changed. This is not reset when the startup
files are executed, allowing the startup files to dis-
cover whether or not a shell is restricted.
sshhiifftt__vveerrbboossee
If set, the sshhiifftt builtin prints an error message when
If set, the sshhiifftt builtin prints an error message when
the shift count exceeds the number of positional parame-
ters.
ssoouurrcceeppaatthh
If set, the ssoouurrccee (..) builtin uses the value of PPAATTHH to
find the directory containing the file supplied as an
find the directory containing the file supplied as an
argument. This option is enabled by default.
xxppgg__eecchhoo
If set, the eecchhoo builtin expands backslash-escape
If set, the eecchhoo builtin expands backslash-escape
sequences by default.
ssuussppeenndd [--ff]
Suspend the execution of this shell until it receives a SSIIGGCCOONNTT
Suspend the execution of this shell until it receives a SSIIGGCCOONNTT
signal. A login shell cannot be suspended; the --ff option can be
used to override this and force the suspension. The return sta-
tus is 0 unless the shell is a login shell and --ff is not sup-
tus is 0 unless the shell is a login shell and --ff is not sup-
plied, or if job control is not enabled.
tteesstt _e_x_p_r
[[ _e_x_p_r ]]
Return a status of 0 (true) or 1 (false) depending on the evalu-
ation of the conditional expression _e_x_p_r. Each operator and op-
erand must be a separate argument. Expressions are composed of
the primaries described above under CCOONNDDIITTIIOONNAALL EEXXPPRREESSSSIIOONNSS.
tteesstt does not accept any options, nor does it accept and ignore
erand must be a separate argument. Expressions are composed of
the primaries described above under CCOONNDDIITTIIOONNAALL EEXXPPRREESSSSIIOONNSS.
tteesstt does not accept any options, nor does it accept and ignore
an argument of ---- as signifying the end of options.
Expressions may be combined using the following operators,
Expressions may be combined using the following operators,
listed in decreasing order of precedence. The evaluation
depends on the number of arguments; see below. Operator prece-
depends on the number of arguments; see below. Operator prece-
dence is used when there are five or more arguments.
!! _e_x_p_r True if _e_x_p_r is false.
(( _e_x_p_r ))
Returns the value of _e_x_p_r. This may be used to override
Returns the value of _e_x_p_r. This may be used to override
the normal precedence of operators.
_e_x_p_r_1 -aa _e_x_p_r_2
True if both _e_x_p_r_1 and _e_x_p_r_2 are true.
@@ -5835,120 +5836,120 @@ SSHHEELLLL BBUUIILLTTIINN CCOOMMMMAANNDDSS
null.
2 arguments
If the first argument is !!, the expression is true if and
only if the second argument is null. If the first argu-
ment is one of the unary conditional operators listed
above under CCOONNDDIITTIIOONNAALL EEXXPPRREESSSSIIOONNSS, the expression is
only if the second argument is null. If the first argu-
ment is one of the unary conditional operators listed
above under CCOONNDDIITTIIOONNAALL EEXXPPRREESSSSIIOONNSS, the expression is
true if the unary test is true. If the first argument is
not a valid unary conditional operator, the expression is
false.
3 arguments
The following conditions are applied in the order listed.
If the second argument is one of the binary conditional
If the second argument is one of the binary conditional
operators listed above under CCOONNDDIITTIIOONNAALL EEXXPPRREESSSSIIOONNSS, the
result of the expression is the result of the binary test
using the first and third arguments as operands. The --aa
and --oo operators are considered binary operators when
there are three arguments. If the first argument is !!,
the value is the negation of the two-argument test using
using the first and third arguments as operands. The --aa
and --oo operators are considered binary operators when
there are three arguments. If the first argument is !!,
the value is the negation of the two-argument test using
the second and third arguments. If the first argument is
exactly (( and the third argument is exactly )), the result
is the one-argument test of the second argument. Other-
is the one-argument test of the second argument. Other-
wise, the expression is false.
4 arguments
If the first argument is !!, the result is the negation of
the three-argument expression composed of the remaining
the three-argument expression composed of the remaining
arguments. Otherwise, the expression is parsed and eval-
uated according to precedence using the rules listed
uated according to precedence using the rules listed
above.
5 or more arguments
The expression is parsed and evaluated according to
The expression is parsed and evaluated according to
precedence using the rules listed above.
When used with tteesstt or [[, the << and >> operators sort lexico-
When used with tteesstt or [[, the << and >> operators sort lexico-
graphically using ASCII ordering.
ttiimmeess Print the accumulated user and system times for the shell and
ttiimmeess Print the accumulated user and system times for the shell and
for processes run from the shell. The return status is 0.
ttrraapp [--llpp] [[_a_r_g] _s_i_g_s_p_e_c ...]
The command _a_r_g is to be read and executed when the shell
receives signal(s) _s_i_g_s_p_e_c. If _a_r_g is absent (and there is a
single _s_i_g_s_p_e_c) or --, each specified signal is reset to its
original disposition (the value it had upon entrance to the
shell). If _a_r_g is the null string the signal specified by each
_s_i_g_s_p_e_c is ignored by the shell and by the commands it invokes.
If _a_r_g is not present and --pp has been supplied, then the trap
commands associated with each _s_i_g_s_p_e_c are displayed. If no
arguments are supplied or if only --pp is given, ttrraapp prints the
list of commands associated with each signal. The --ll option
causes the shell to print a list of signal names and their cor-
responding numbers. Each _s_i_g_s_p_e_c is either a signal name
defined in <_s_i_g_n_a_l_._h>, or a signal number. Signal names are
The command _a_r_g is to be read and executed when the shell
receives signal(s) _s_i_g_s_p_e_c. If _a_r_g is absent (and there is a
single _s_i_g_s_p_e_c) or --, each specified signal is reset to its
original disposition (the value it had upon entrance to the
shell). If _a_r_g is the null string the signal specified by each
_s_i_g_s_p_e_c is ignored by the shell and by the commands it invokes.
If _a_r_g is not present and --pp has been supplied, then the trap
commands associated with each _s_i_g_s_p_e_c are displayed. If no
arguments are supplied or if only --pp is given, ttrraapp prints the
list of commands associated with each signal. The --ll option
causes the shell to print a list of signal names and their cor-
responding numbers. Each _s_i_g_s_p_e_c is either a signal name
defined in <_s_i_g_n_a_l_._h>, or a signal number. Signal names are
case insensitive and the SSIIGG prefix is optional.
If a _s_i_g_s_p_e_c is EEXXIITT (0) the command _a_r_g is executed on exit
from the shell. If a _s_i_g_s_p_e_c is DDEEBBUUGG, the command _a_r_g is exe-
cuted before every _s_i_m_p_l_e _c_o_m_m_a_n_d, _f_o_r command, _c_a_s_e command,
_s_e_l_e_c_t command, every arithmetic _f_o_r command, and before the
first command executes in a shell function (see SSHHEELLLL GGRRAAMMMMAARR
above). Refer to the description of the eexxttddeebbuugg option to the
If a _s_i_g_s_p_e_c is EEXXIITT (0) the command _a_r_g is executed on exit
from the shell. If a _s_i_g_s_p_e_c is DDEEBBUUGG, the command _a_r_g is exe-
cuted before every _s_i_m_p_l_e _c_o_m_m_a_n_d, _f_o_r command, _c_a_s_e command,
_s_e_l_e_c_t command, every arithmetic _f_o_r command, and before the
first command executes in a shell function (see SSHHEELLLL GGRRAAMMMMAARR
above). Refer to the description of the eexxttddeebbuugg option to the
sshhoopptt builtin for details of its effect on the DDEEBBUUGG trap. If a
_s_i_g_s_p_e_c is RREETTUURRNN, the command _a_r_g is executed each time a shell
function or a script executed with the .. or ssoouurrccee builtins fin-
ishes executing.
If a _s_i_g_s_p_e_c is EERRRR, the command _a_r_g is executed whenever a
If a _s_i_g_s_p_e_c is EERRRR, the command _a_r_g is executed whenever a
pipeline (which may consist of a single simple command), a list,
or a compound command returns a non-zero exit status, subject to
the following conditions. The EERRRR trap is not executed if the
the following conditions. The EERRRR trap is not executed if the
failed command is part of the command list immediately following
a wwhhiillee or uunnttiill keyword, part of the test in an _i_f statement,
a wwhhiillee or uunnttiill keyword, part of the test in an _i_f statement,
part of a command executed in a &&&& or |||| list except the command
following the final &&&& or ||||, any command in a pipeline but the
last, or if the command's return value is being inverted using
!!. These are the same conditions obeyed by the eerrrreexxiitt (--ee)
following the final &&&& or ||||, any command in a pipeline but the
last, or if the command's return value is being inverted using
!!. These are the same conditions obeyed by the eerrrreexxiitt (--ee)
option.
Signals ignored upon entry to the shell cannot be trapped or
reset. Trapped signals that are not being ignored are reset to
Signals ignored upon entry to the shell cannot be trapped or
reset. Trapped signals that are not being ignored are reset to
their original values in a subshell or subshell environment when
one is created. The return status is false if any _s_i_g_s_p_e_c is
one is created. The return status is false if any _s_i_g_s_p_e_c is
invalid; otherwise ttrraapp returns true.
ttyyppee [--aaffttppPP] _n_a_m_e [_n_a_m_e ...]
With no options, indicate how each _n_a_m_e would be interpreted if
With no options, indicate how each _n_a_m_e would be interpreted if
used as a command name. If the --tt option is used, ttyyppee prints a
string which is one of _a_l_i_a_s, _k_e_y_w_o_r_d, _f_u_n_c_t_i_o_n, _b_u_i_l_t_i_n, or
_f_i_l_e if _n_a_m_e is an alias, shell reserved word, function,
builtin, or disk file, respectively. If the _n_a_m_e is not found,
then nothing is printed, and an exit status of false is
returned. If the --pp option is used, ttyyppee either returns the
string which is one of _a_l_i_a_s, _k_e_y_w_o_r_d, _f_u_n_c_t_i_o_n, _b_u_i_l_t_i_n, or
_f_i_l_e if _n_a_m_e is an alias, shell reserved word, function,
builtin, or disk file, respectively. If the _n_a_m_e is not found,
then nothing is printed, and an exit status of false is
returned. If the --pp option is used, ttyyppee either returns the
name of the disk file that would be executed if _n_a_m_e were speci-
fied as a command name, or nothing if ``type -t name'' would not
return _f_i_l_e. The --PP option forces a PPAATTHH search for each _n_a_m_e,
return _f_i_l_e. The --PP option forces a PPAATTHH search for each _n_a_m_e,
even if ``type -t name'' would not return _f_i_l_e. If a command is
hashed, --pp and --PP print the hashed value, which is not necessar-
ily the file that appears first in PPAATTHH. If the --aa option is
used, ttyyppee prints all of the places that contain an executable
ily the file that appears first in PPAATTHH. If the --aa option is
used, ttyyppee prints all of the places that contain an executable
named _n_a_m_e. This includes aliases and functions, if and only if
the --pp option is not also used. The table of hashed commands is
not consulted when using --aa. The --ff option suppresses shell
not consulted when using --aa. The --ff option suppresses shell
function lookup, as with the ccoommmmaanndd builtin. ttyyppee returns true
if all of the arguments are found, false if any are not found.
uulliimmiitt [--HHSSaabbccddeeffiikkllmmnnppqqrrssttuuvvxxPPTT [_l_i_m_i_t]]
Provides control over the resources available to the shell and
to processes started by it, on systems that allow such control.
Provides control over the resources available to the shell and
to processes started by it, on systems that allow such control.
The --HH and --SS options specify that the hard or soft limit is set
for the given resource. A hard limit cannot be increased by a
non-root user once it is set; a soft limit may be increased up
to the value of the hard limit. If neither --HH nor --SS is speci-
for the given resource. A hard limit cannot be increased by a
non-root user once it is set; a soft limit may be increased up
to the value of the hard limit. If neither --HH nor --SS is speci-
fied, both the soft and hard limits are set. The value of _l_i_m_i_t
can be a number in the unit specified for the resource or one of
the special values hhaarrdd, ssoofftt, or uunnlliimmiitteedd, which stand for the
current hard limit, the current soft limit, and no limit,
respectively. If _l_i_m_i_t is omitted, the current value of the
soft limit of the resource is printed, unless the --HH option is
current hard limit, the current soft limit, and no limit,
respectively. If _l_i_m_i_t is omitted, the current value of the
soft limit of the resource is printed, unless the --HH option is
given. When more than one resource is specified, the limit name
and unit are printed before the value. Other options are inter-
preted as follows:
@@ -5957,12 +5958,12 @@ SSHHEELLLL BBUUIILLTTIINN CCOOMMMMAANNDDSS
--cc The maximum size of core files created
--dd The maximum size of a process's data segment
--ee The maximum scheduling priority ("nice")
--ff The maximum size of files written by the shell and its
--ff The maximum size of files written by the shell and its
children
--ii The maximum number of pending signals
--kk The maximum number of kqueues that may be allocated
--ll The maximum size that may be locked into memory
--mm The maximum resident set size (many systems do not honor
--mm The maximum resident set size (many systems do not honor
this limit)
--nn The maximum number of open file descriptors (most systems
do not allow this value to be set)
@@ -5971,53 +5972,53 @@ SSHHEELLLL BBUUIILLTTIINN CCOOMMMMAANNDDSS
--rr The maximum real-time scheduling priority
--ss The maximum stack size
--tt The maximum amount of cpu time in seconds
--uu The maximum number of processes available to a single
--uu The maximum number of processes available to a single
user
--vv The maximum amount of virtual memory available to the
--vv The maximum amount of virtual memory available to the
shell and, on some systems, to its children
--xx The maximum number of file locks
--PP The maximum number of pseudoterminals
--TT The maximum number of threads
If _l_i_m_i_t is given, and the --aa option is not used, _l_i_m_i_t is the
new value of the specified resource. If no option is given,
then --ff is assumed. Values are in 1024-byte increments, except
for --tt, which is in seconds; --pp, which is in units of 512-byte
blocks; --PP, --TT, --bb, --kk, --nn, and --uu, which are unscaled values;
If _l_i_m_i_t is given, and the --aa option is not used, _l_i_m_i_t is the
new value of the specified resource. If no option is given,
then --ff is assumed. Values are in 1024-byte increments, except
for --tt, which is in seconds; --pp, which is in units of 512-byte
blocks; --PP, --TT, --bb, --kk, --nn, and --uu, which are unscaled values;
and, when in posix mode, --cc and --ff, which are in 512-byte incre-
ments. The return status is 0 unless an invalid option or argu-
ment is supplied, or an error occurs while setting a new limit.
uummaasskk [--pp] [--SS] [_m_o_d_e]
The user file-creation mask is set to _m_o_d_e. If _m_o_d_e begins with
a digit, it is interpreted as an octal number; otherwise it is
interpreted as a symbolic mode mask similar to that accepted by
_c_h_m_o_d(1). If _m_o_d_e is omitted, the current value of the mask is
printed. The --SS option causes the mask to be printed in sym-
bolic form; the default output is an octal number. If the --pp
a digit, it is interpreted as an octal number; otherwise it is
interpreted as a symbolic mode mask similar to that accepted by
_c_h_m_o_d(1). If _m_o_d_e is omitted, the current value of the mask is
printed. The --SS option causes the mask to be printed in sym-
bolic form; the default output is an octal number. If the --pp
option is supplied, and _m_o_d_e is omitted, the output is in a form
that may be reused as input. The return status is 0 if the mode
was successfully changed or if no _m_o_d_e argument was supplied,
was successfully changed or if no _m_o_d_e argument was supplied,
and false otherwise.
uunnaalliiaass [-aa] [_n_a_m_e ...]
Remove each _n_a_m_e from the list of defined aliases. If --aa is
supplied, all alias definitions are removed. The return value
Remove each _n_a_m_e from the list of defined aliases. If --aa is
supplied, all alias definitions are removed. The return value
is true unless a supplied _n_a_m_e is not a defined alias.
uunnsseett [-ffvv] [-nn] [_n_a_m_e ...]
For each _n_a_m_e, remove the corresponding variable or function.
For each _n_a_m_e, remove the corresponding variable or function.
If the --vv option is given, each _n_a_m_e refers to a shell variable,
and that variable is removed. Read-only variables may not be
unset. If --ff is specified, each _n_a_m_e refers to a shell func-
tion, and the function definition is removed. If the --nn option
is supplied, and _n_a_m_e is a variable with the _n_a_m_e_r_e_f attribute,
_n_a_m_e will be unset rather than the variable it references. --nn
has no effect if the --ff option is supplied. If no options are
supplied, each _n_a_m_e refers to a variable; if there is no vari-
able by that name, any function with that name is unset. Each
unset variable or function is removed from the environment
passed to subsequent commands. If any of CCOOMMPP__WWOORRDDBBRREEAAKKSS, RRAANN--
and that variable is removed. Read-only variables may not be
unset. If --ff is specified, each _n_a_m_e refers to a shell func-
tion, and the function definition is removed. If the --nn option
is supplied, and _n_a_m_e is a variable with the _n_a_m_e_r_e_f attribute,
_n_a_m_e will be unset rather than the variable it references. --nn
has no effect if the --ff option is supplied. If no options are
supplied, each _n_a_m_e refers to a variable; if there is no vari-
able by that name, any function with that name is unset. Each
unset variable or function is removed from the environment
passed to subsequent commands. If any of CCOOMMPP__WWOORRDDBBRREEAAKKSS, RRAANN--
DDOOMM, SSEECCOONNDDSS, LLIINNEENNOO, HHIISSTTCCMMDD, FFUUNNCCNNAAMMEE, GGRROOUUPPSS, or DDIIRRSSTTAACCKK are
unset, they lose their special properties, even if they are sub-
sequently reset. The exit status is true unless a _n_a_m_e is read-
@@ -6025,23 +6026,23 @@ SSHHEELLLL BBUUIILLTTIINN CCOOMMMMAANNDDSS
wwaaiitt [--ffnn] [_i_d _._._.]
Wait for each specified child process and return its termination
status. Each _i_d may be a process ID or a job specification; if
a job spec is given, all processes in that job's pipeline are
status. Each _i_d may be a process ID or a job specification; if
a job spec is given, all processes in that job's pipeline are
waited for. If _i_d is not given, all currently active child pro-
cesses are waited for, and the return status is zero. If the --nn
option is supplied, wwaaiitt waits for any job to terminate and
returns its exit status. If the --ff option is supplied, and job
option is supplied, wwaaiitt waits for any job to terminate and
returns its exit status. If the --ff option is supplied, and job
control is enabled, wwaaiitt forces _i_d to terminate before returning
its status, instead of returning when it changes status. If _i_d
specifies a non-existent process or job, the return status is
127. Otherwise, the return status is the exit status of the
its status, instead of returning when it changes status. If _i_d
specifies a non-existent process or job, the return status is
127. Otherwise, the return status is the exit status of the
last process or job waited for.
RREESSTTRRIICCTTEEDD SSHHEELLLL
If bbaasshh is started with the name rrbbaasshh, or the --rr option is supplied at
invocation, the shell becomes restricted. A restricted shell is used
to set up an environment more controlled than the standard shell. It
behaves identically to bbaasshh with the exception that the following are
invocation, the shell becomes restricted. A restricted shell is used
to set up an environment more controlled than the standard shell. It
behaves identically to bbaasshh with the exception that the following are
disallowed or not performed:
+o changing directories with ccdd
@@ -6050,16 +6051,16 @@ RREESSTTRRIICCTTEEDD SSHHEELLLL
+o specifying command names containing //
+o specifying a filename containing a // as an argument to the ..
+o specifying a filename containing a // as an argument to the ..
builtin command
+o specifying a filename containing a slash as an argument to the
+o specifying a filename containing a slash as an argument to the
--pp option to the hhaasshh builtin command
+o importing function definitions from the shell environment at
+o importing function definitions from the shell environment at
startup
+o parsing the value of SSHHEELLLLOOPPTTSS from the shell environment at
+o parsing the value of SSHHEELLLLOOPPTTSS from the shell environment at
startup
+o redirecting output using the >, >|, <>, >&, &>, and >> redirect-
@@ -6068,10 +6069,10 @@ RREESSTTRRIICCTTEEDD SSHHEELLLL
+o using the eexxeecc builtin command to replace the shell with another
command
+o adding or deleting builtin commands with the --ff and --dd options
+o adding or deleting builtin commands with the --ff and --dd options
to the eennaabbllee builtin command
+o using the eennaabbllee builtin command to enable disabled shell
+o using the eennaabbllee builtin command to enable disabled shell
builtins
+o specifying the --pp option to the ccoommmmaanndd builtin command
@@ -6081,14 +6082,14 @@ RREESSTTRRIICCTTEEDD SSHHEELLLL
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed (see CCOOMM--
MMAANNDD EEXXEECCUUTTIIOONN above), rrbbaasshh turns off any restrictions in the shell
MMAANNDD EEXXEECCUUTTIIOONN above), rrbbaasshh turns off any restrictions in the shell
spawned to execute the script.
SSEEEE AALLSSOO
_B_a_s_h _R_e_f_e_r_e_n_c_e _M_a_n_u_a_l, Brian Fox and Chet Ramey
_T_h_e _G_n_u _R_e_a_d_l_i_n_e _L_i_b_r_a_r_y, Brian Fox and Chet Ramey
_T_h_e _G_n_u _H_i_s_t_o_r_y _L_i_b_r_a_r_y, Brian Fox and Chet Ramey
_P_o_r_t_a_b_l_e _O_p_e_r_a_t_i_n_g _S_y_s_t_e_m _I_n_t_e_r_f_a_c_e _(_P_O_S_I_X_) _P_a_r_t _2_: _S_h_e_l_l _a_n_d _U_t_i_l_i_-
_P_o_r_t_a_b_l_e _O_p_e_r_a_t_i_n_g _S_y_s_t_e_m _I_n_t_e_r_f_a_c_e _(_P_O_S_I_X_) _P_a_r_t _2_: _S_h_e_l_l _a_n_d _U_t_i_l_i_-
_t_i_e_s, IEEE --
http://pubs.opengroup.org/onlinepubs/9699919799/
http://tiswww.case.edu/~chet/bash/POSIX -- a description of posix mode
@@ -6106,7 +6107,7 @@ FFIILLEESS
_~_/_._b_a_s_h_r_c
The individual per-interactive-shell startup file
_~_/_._b_a_s_h___l_o_g_o_u_t
The individual login shell cleanup file, executed when a login
The individual login shell cleanup file, executed when a login
shell exits
_~_/_._i_n_p_u_t_r_c
Individual _r_e_a_d_l_i_n_e initialization file
@@ -6120,14 +6121,14 @@ AAUUTTHHOORRSS
BBUUGG RREEPPOORRTTSS
If you find a bug in bbaasshh,, you should report it. But first, you should
make sure that it really is a bug, and that it appears in the latest
version of bbaasshh. The latest version is always available from
make sure that it really is a bug, and that it appears in the latest
version of bbaasshh. The latest version is always available from
_f_t_p_:_/_/_f_t_p_._g_n_u_._o_r_g_/_p_u_b_/_g_n_u_/_b_a_s_h_/.
Once you have determined that a bug actually exists, use the _b_a_s_h_b_u_g
command to submit a bug report. If you have a fix, you are encouraged
to mail that as well! Suggestions and `philosophical' bug reports may
be mailed to _b_u_g_-_b_a_s_h_@_g_n_u_._o_r_g or posted to the Usenet newsgroup
Once you have determined that a bug actually exists, use the _b_a_s_h_b_u_g
command to submit a bug report. If you have a fix, you are encouraged
to mail that as well! Suggestions and `philosophical' bug reports may
be mailed to _b_u_g_-_b_a_s_h_@_g_n_u_._o_r_g or posted to the Usenet newsgroup
ggnnuu..bbaasshh..bbuugg.
ALL bug reports should include:
@@ -6138,7 +6139,7 @@ BBUUGG RREEPPOORRTTSS
A description of the bug behaviour
A short script or `recipe' which exercises the bug
_b_a_s_h_b_u_g inserts the first three items automatically into the template
_b_a_s_h_b_u_g inserts the first three items automatically into the template
it provides for filing a bug report.
Comments and bug reports concerning this manual page should be directed
@@ -6155,10 +6156,10 @@ BBUUGGSS
Shell builtin commands and functions are not stoppable/restartable.
Compound commands and command sequences of the form `a ; b ; c' are not
handled gracefully when process suspension is attempted. When a
process is stopped, the shell immediately executes the next command in
the sequence. It suffices to place the sequence of commands between
parentheses to force it into a subshell, which may be stopped as a
handled gracefully when process suspension is attempted. When a
process is stopped, the shell immediately executes the next command in
the sequence. It suffices to place the sequence of commands between
parentheses to force it into a subshell, which may be stopped as a
unit.
Array variables may not (yet) be exported.
doc/bash.1
+3 -2
View File
@@ -9769,8 +9769,9 @@ The list of \fBshopt\fP options is:
.TP 8
.B assoc_expand_once
If set, the shell suppresses multiple evaluation of associative array
subscripts during arithmetic expression evaluation and while executing
builtins that can perform variable assignments.
subscripts during arithmetic expression evaluation, while executing
builtins that can perform variable assignments,
and while executing builtins that perform array dereferencing.
.TP 8
.B autocd
If set, a command name that is the name of a directory is executed as if
doc/bash.html
+4 -3
View File
@@ -12388,8 +12388,9 @@ The list of <B>shopt</B> options is:
<DD>
If set, the shell suppresses multiple evaluation of associative array
subscripts during arithmetic expression evaluation and while executing
builtins that can perform variable assignments.
subscripts during arithmetic expression evaluation, while executing
builtins that can perform variable assignments,
and while executing builtins that perform array dereferencing.
<DT><B>autocd</B>
<DD>
@@ -14037,6 +14038,6 @@ There may be only one active coprocess at a time.
</DL>
<HR>
This document was created by man2html from bash.1.<BR>
Time: 21 December 2018 09:58:51 EST
Time: 02 January 2019 09:14:47 EST
</BODY>
</HTML>
doc/bash.info
+77 -76
View File
@@ -4376,8 +4376,9 @@ This builtin allows you to change additional shell optional behavior.
'assoc_expand_once'
If set, the shell suppresses multiple evaluation of
associative array subscripts during arithmetic expression
evaluation and while executing builtins that can perform
variable assignments.
evaluation, while executing builtins that can perform variable
assignments, and while executing builtins that perform array
dereferencing.
'autocd'
If set, a command name that is the name of a directory is
@@ -11737,79 +11738,79 @@ Node: Bash Builtins145959
Node: Modifying Shell Behavior174884
Node: The Set Builtin175229
Node: The Shopt Builtin185642
Node: Special Builtins203214
Node: Shell Variables204193
Node: Bourne Shell Variables204630
Node: Bash Variables206734
Node: Bash Features237194
Node: Invoking Bash238093
Node: Bash Startup Files244106
Node: Interactive Shells249209
Node: What is an Interactive Shell?249619
Node: Is this Shell Interactive?250268
Node: Interactive Shell Behavior251083
Node: Bash Conditional Expressions254570
Node: Shell Arithmetic259147
Node: Aliases261964
Node: Arrays264584
Node: The Directory Stack269950
Node: Directory Stack Builtins270734
Node: Controlling the Prompt273702
Node: The Restricted Shell276468
Node: Bash POSIX Mode278293
Node: Job Control289226
Node: Job Control Basics289686
Node: Job Control Builtins294654
Node: Job Control Variables299381
Node: Command Line Editing300537
Node: Introduction and Notation302208
Node: Readline Interaction303831
Node: Readline Bare Essentials305022
Node: Readline Movement Commands306805
Node: Readline Killing Commands307765
Node: Readline Arguments309683
Node: Searching310727
Node: Readline Init File312913
Node: Readline Init File Syntax314060
Node: Conditional Init Constructs334499
Node: Sample Init File338695
Node: Bindable Readline Commands341812
Node: Commands For Moving343016
Node: Commands For History344865
Node: Commands For Text349160
Node: Commands For Killing352548
Node: Numeric Arguments355029
Node: Commands For Completion356168
Node: Keyboard Macros360359
Node: Miscellaneous Commands361046
Node: Readline vi Mode366999
Node: Programmable Completion367906
Node: Programmable Completion Builtins375686
Node: A Programmable Completion Example386379
Node: Using History Interactively391619
Node: Bash History Facilities392303
Node: Bash History Builtins395308
Node: History Interaction399839
Node: Event Designators403459
Node: Word Designators404678
Node: Modifiers406315
Node: Installing Bash407717
Node: Basic Installation408854
Node: Compilers and Options412112
Node: Compiling For Multiple Architectures412853
Node: Installation Names414546
Node: Specifying the System Type415364
Node: Sharing Defaults416080
Node: Operation Controls416753
Node: Optional Features417711
Node: Reporting Bugs428229
Node: Major Differences From The Bourne Shell429423
Node: GNU Free Documentation License446275
Node: Indexes471452
Node: Builtin Index471906
Node: Reserved Word Index478733
Node: Variable Index481181
Node: Function Index496932
Node: Concept Index510235
Node: Special Builtins203284
Node: Shell Variables204263
Node: Bourne Shell Variables204700
Node: Bash Variables206804
Node: Bash Features237264
Node: Invoking Bash238163
Node: Bash Startup Files244176
Node: Interactive Shells249279
Node: What is an Interactive Shell?249689
Node: Is this Shell Interactive?250338
Node: Interactive Shell Behavior251153
Node: Bash Conditional Expressions254640
Node: Shell Arithmetic259217
Node: Aliases262034
Node: Arrays264654
Node: The Directory Stack270020
Node: Directory Stack Builtins270804
Node: Controlling the Prompt273772
Node: The Restricted Shell276538
Node: Bash POSIX Mode278363
Node: Job Control289296
Node: Job Control Basics289756
Node: Job Control Builtins294724
Node: Job Control Variables299451
Node: Command Line Editing300607
Node: Introduction and Notation302278
Node: Readline Interaction303901
Node: Readline Bare Essentials305092
Node: Readline Movement Commands306875
Node: Readline Killing Commands307835
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Node: Searching310797
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Node: Readline Init File Syntax314130
Node: Conditional Init Constructs334569
Node: Sample Init File338765
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Node: Commands For Killing352618
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Node: Commands For Completion356238
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Node: Readline vi Mode367069
Node: Programmable Completion367976
Node: Programmable Completion Builtins375756
Node: A Programmable Completion Example386449
Node: Using History Interactively391689
Node: Bash History Facilities392373
Node: Bash History Builtins395378
Node: History Interaction399909
Node: Event Designators403529
Node: Word Designators404748
Node: Modifiers406385
Node: Installing Bash407787
Node: Basic Installation408924
Node: Compilers and Options412182
Node: Compiling For Multiple Architectures412923
Node: Installation Names414616
Node: Specifying the System Type415434
Node: Sharing Defaults416150
Node: Operation Controls416823
Node: Optional Features417781
Node: Reporting Bugs428299
Node: Major Differences From The Bourne Shell429493
Node: GNU Free Documentation License446345
Node: Indexes471522
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Node: Reserved Word Index478803
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@@ -5984,8 +5984,9 @@ option.
</p><dl compact="compact">
<dt><code>assoc_expand_once</code></dt>
<dd><p>If set, the shell suppresses multiple evaluation of associative array
subscripts during arithmetic expression evaluation and while executing
builtins that can perform variable assignments.
subscripts during arithmetic expression evaluation, while executing
builtins that can perform variable assignments,
and while executing builtins that perform array dereferencing.
</p>
</dd>
<dt><code>autocd</code></dt>
doc/bashref.info
+77 -76
View File
@@ -4376,8 +4376,9 @@ This builtin allows you to change additional shell optional behavior.
'assoc_expand_once'
If set, the shell suppresses multiple evaluation of
associative array subscripts during arithmetic expression
evaluation and while executing builtins that can perform
variable assignments.
evaluation, while executing builtins that can perform variable
assignments, and while executing builtins that perform array
dereferencing.
'autocd'
If set, a command name that is the name of a directory is
@@ -11737,79 +11738,79 @@ Node: Bash Builtins145959
Node: Modifying Shell Behavior174884
Node: The Set Builtin175229
Node: The Shopt Builtin185642
Node: Special Builtins203214
Node: Shell Variables204193
Node: Bourne Shell Variables204630
Node: Bash Variables206734
Node: Bash Features237194
Node: Invoking Bash238093
Node: Bash Startup Files244106
Node: Interactive Shells249209
Node: What is an Interactive Shell?249619
Node: Is this Shell Interactive?250268
Node: Interactive Shell Behavior251083
Node: Bash Conditional Expressions254570
Node: Shell Arithmetic259147
Node: Aliases261964
Node: Arrays264584
Node: The Directory Stack269950
Node: Directory Stack Builtins270734
Node: Controlling the Prompt273702
Node: The Restricted Shell276468
Node: Bash POSIX Mode278293
Node: Job Control289226
Node: Job Control Basics289686
Node: Job Control Builtins294654
Node: Job Control Variables299381
Node: Command Line Editing300537
Node: Introduction and Notation302208
Node: Readline Interaction303831
Node: Readline Bare Essentials305022
Node: Readline Movement Commands306805
Node: Readline Killing Commands307765
Node: Readline Arguments309683
Node: Searching310727
Node: Readline Init File312913
Node: Readline Init File Syntax314060
Node: Conditional Init Constructs334499
Node: Sample Init File338695
Node: Bindable Readline Commands341812
Node: Commands For Moving343016
Node: Commands For History344865
Node: Commands For Text349160
Node: Commands For Killing352548
Node: Numeric Arguments355029
Node: Commands For Completion356168
Node: Keyboard Macros360359
Node: Miscellaneous Commands361046
Node: Readline vi Mode366999
Node: Programmable Completion367906
Node: Programmable Completion Builtins375686
Node: A Programmable Completion Example386379
Node: Using History Interactively391619
Node: Bash History Facilities392303
Node: Bash History Builtins395308
Node: History Interaction399839
Node: Event Designators403459
Node: Word Designators404678
Node: Modifiers406315
Node: Installing Bash407717
Node: Basic Installation408854
Node: Compilers and Options412112
Node: Compiling For Multiple Architectures412853
Node: Installation Names414546
Node: Specifying the System Type415364
Node: Sharing Defaults416080
Node: Operation Controls416753
Node: Optional Features417711
Node: Reporting Bugs428229
Node: Major Differences From The Bourne Shell429423
Node: GNU Free Documentation License446275
Node: Indexes471452
Node: Builtin Index471906
Node: Reserved Word Index478733
Node: Variable Index481181
Node: Function Index496932
Node: Concept Index510235
Node: Special Builtins203284
Node: Shell Variables204263
Node: Bourne Shell Variables204700
Node: Bash Variables206804
Node: Bash Features237264
Node: Invoking Bash238163
Node: Bash Startup Files244176
Node: Interactive Shells249279
Node: What is an Interactive Shell?249689
Node: Is this Shell Interactive?250338
Node: Interactive Shell Behavior251153
Node: Bash Conditional Expressions254640
Node: Shell Arithmetic259217
Node: Aliases262034
Node: Arrays264654
Node: The Directory Stack270020
Node: Directory Stack Builtins270804
Node: Controlling the Prompt273772
Node: The Restricted Shell276538
Node: Bash POSIX Mode278363
Node: Job Control289296
Node: Job Control Basics289756
Node: Job Control Builtins294724
Node: Job Control Variables299451
Node: Command Line Editing300607
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Node: Readline Interaction303901
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Node: Commands For History344935
Node: Commands For Text349230
Node: Commands For Killing352618
Node: Numeric Arguments355099
Node: Commands For Completion356238
Node: Keyboard Macros360429
Node: Miscellaneous Commands361116
Node: Readline vi Mode367069
Node: Programmable Completion367976
Node: Programmable Completion Builtins375756
Node: A Programmable Completion Example386449
Node: Using History Interactively391689
Node: Bash History Facilities392373
Node: Bash History Builtins395378
Node: History Interaction399909
Node: Event Designators403529
Node: Word Designators404748
Node: Modifiers406385
Node: Installing Bash407787
Node: Basic Installation408924
Node: Compilers and Options412182
Node: Compiling For Multiple Architectures412923
Node: Installation Names414616
Node: Specifying the System Type415434
Node: Sharing Defaults416150
Node: Operation Controls416823
Node: Optional Features417781
Node: Reporting Bugs428299
Node: Major Differences From The Bourne Shell429493
Node: GNU Free Documentation License446345
Node: Indexes471522
Node: Builtin Index471976
Node: Reserved Word Index478803
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Node: Concept Index510305

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%%Page: 66 72
TeXDict begin 66 71 bop 150 -116 a Fu(Chapter)30 b(4:)41
b(Shell)30 b(Builtin)h(Commands)2069 b(66)630 299 y Ft(autocd)192
doc/bashref.texi
+3 -2
View File
@@ -5141,8 +5141,9 @@ The list of @code{shopt} options is:
@item assoc_expand_once
If set, the shell suppresses multiple evaluation of associative array
subscripts during arithmetic expression evaluation and while executing
builtins that can perform variable assignments.
subscripts during arithmetic expression evaluation, while executing
builtins that can perform variable assignments,
and while executing builtins that perform array dereferencing.
@item autocd
If set, a command name that is the name of a directory is executed as if
doc/builtins.0
+249 -248
View File
@@ -1309,321 +1309,322 @@ BBAASSHH BBUUIILLTTIINN CCOOMMMMAANNDDSS
aassssoocc__eexxppaanndd__oonnccee
If set, the shell suppresses multiple evaluation of
associative array subscripts during arithmetic expres-
sion evaluation and while executing builtins that can
perform variable assignments.
aauuttooccdd If set, a command name that is the name of a directory
is executed as if it were the argument to the ccdd com-
sion evaluation, while executing builtins that can per-
form variable assignments, and while executing builtins
that perform array dereferencing.
aauuttooccdd If set, a command name that is the name of a directory
is executed as if it were the argument to the ccdd com-
mand. This option is only used by interactive shells.
ccddaabbllee__vvaarrss
If set, an argument to the ccdd builtin command that is
not a directory is assumed to be the name of a variable
If set, an argument to the ccdd builtin command that is
not a directory is assumed to be the name of a variable
whose value is the directory to change to.
ccddssppeellll If set, minor errors in the spelling of a directory com-
ponent in a ccdd command will be corrected. The errors
ponent in a ccdd command will be corrected. The errors
checked for are transposed characters, a missing charac-
ter, and one character too many. If a correction is
found, the corrected filename is printed, and the com-
mand proceeds. This option is only used by interactive
ter, and one character too many. If a correction is
found, the corrected filename is printed, and the com-
mand proceeds. This option is only used by interactive
shells.
cchheecckkhhaasshh
If set, bbaasshh checks that a command found in the hash ta-
ble exists before trying to execute it. If a hashed
command no longer exists, a normal path search is per-
ble exists before trying to execute it. If a hashed
command no longer exists, a normal path search is per-
formed.
cchheecckkjjoobbss
If set, bbaasshh lists the status of any stopped and running
jobs before exiting an interactive shell. If any jobs
jobs before exiting an interactive shell. If any jobs
are running, this causes the exit to be deferred until a
second exit is attempted without an intervening command
(see JJOOBB CCOONNTTRROOLL above). The shell always postpones
second exit is attempted without an intervening command
(see JJOOBB CCOONNTTRROOLL above). The shell always postpones
exiting if any jobs are stopped.
cchheecckkwwiinnssiizzee
If set, bbaasshh checks the window size after each external
(non-builtin) command and, if necessary, updates the
values of LLIINNEESS and CCOOLLUUMMNNSS. This option is enabled by
If set, bbaasshh checks the window size after each external
(non-builtin) command and, if necessary, updates the
values of LLIINNEESS and CCOOLLUUMMNNSS. This option is enabled by
default.
ccmmddhhiisstt If set, bbaasshh attempts to save all lines of a multiple-
line command in the same history entry. This allows
easy re-editing of multi-line commands. This option is
enabled by default, but only has an effect if command
ccmmddhhiisstt If set, bbaasshh attempts to save all lines of a multiple-
line command in the same history entry. This allows
easy re-editing of multi-line commands. This option is
enabled by default, but only has an effect if command
history is enabled, as described above under HHIISSTTOORRYY.
ccoommppaatt3311
If set, bbaasshh changes its behavior to that of version 3.1
with respect to quoted arguments to the [[[[ conditional
with respect to quoted arguments to the [[[[ conditional
command's ==~~ operator and locale-specific string compar-
ison when using the [[[[ conditional command's << and >>
operators. Bash versions prior to bash-4.1 use ASCII
ison when using the [[[[ conditional command's << and >>
operators. Bash versions prior to bash-4.1 use ASCII
collation and _s_t_r_c_m_p(3); bash-4.1 and later use the cur-
rent locale's collation sequence and _s_t_r_c_o_l_l(3).
ccoommppaatt3322
If set, bbaasshh changes its behavior to that of version 3.2
with respect to locale-specific string comparison when
using the [[[[ conditional command's << and >> operators
(see previous item) and the effect of interrupting a
command list. Bash versions 3.2 and earlier continue
with the next command in the list after one terminates
with respect to locale-specific string comparison when
using the [[[[ conditional command's << and >> operators
(see previous item) and the effect of interrupting a
command list. Bash versions 3.2 and earlier continue
with the next command in the list after one terminates
due to an interrupt.
ccoommppaatt4400
If set, bbaasshh changes its behavior to that of version 4.0
with respect to locale-specific string comparison when
using the [[[[ conditional command's << and >> operators
(see description of ccoommppaatt3311) and the effect of inter-
rupting a command list. Bash versions 4.0 and later
interrupt the list as if the shell received the inter-
rupt; previous versions continue with the next command
with respect to locale-specific string comparison when
using the [[[[ conditional command's << and >> operators
(see description of ccoommppaatt3311) and the effect of inter-
rupting a command list. Bash versions 4.0 and later
interrupt the list as if the shell received the inter-
rupt; previous versions continue with the next command
in the list.
ccoommppaatt4411
If set, bbaasshh, when in _p_o_s_i_x _m_o_d_e, treats a single quote
in a double-quoted parameter expansion as a special
character. The single quotes must match (an even num-
ber) and the characters between the single quotes are
considered quoted. This is the behavior of posix mode
through version 4.1. The default bash behavior remains
If set, bbaasshh, when in _p_o_s_i_x _m_o_d_e, treats a single quote
in a double-quoted parameter expansion as a special
character. The single quotes must match (an even num-
ber) and the characters between the single quotes are
considered quoted. This is the behavior of posix mode
through version 4.1. The default bash behavior remains
as in previous versions.
ccoommppaatt4422
If set, bbaasshh does not process the replacement string in
the pattern substitution word expansion using quote
If set, bbaasshh does not process the replacement string in
the pattern substitution word expansion using quote
removal.
ccoommppaatt4433
If set, bbaasshh does not print a warning message if an
attempt is made to use a quoted compound array assign-
ment as an argument to ddeeccllaarree, makes word expansion
errors non-fatal errors that cause the current command
to fail (the default behavior is to make them fatal
If set, bbaasshh does not print a warning message if an
attempt is made to use a quoted compound array assign-
ment as an argument to ddeeccllaarree, makes word expansion
errors non-fatal errors that cause the current command
to fail (the default behavior is to make them fatal
errors that cause the shell to exit), and does not reset
the loop state when a shell function is executed (this
allows bbrreeaakk or ccoonnttiinnuuee in a shell function to affect
the loop state when a shell function is executed (this
allows bbrreeaakk or ccoonnttiinnuuee in a shell function to affect
loops in the caller's context).
ccoommppaatt4444
If set, bbaasshh saves the positional parameters to
If set, bbaasshh saves the positional parameters to
BASH_ARGV and BASH_ARGC before they are used, regardless
of whether or not extended debugging mode is enabled.
ccoommpplleettee__ffuullllqquuoottee
If set, bbaasshh quotes all shell metacharacters in file-
names and directory names when performing completion.
If set, bbaasshh quotes all shell metacharacters in file-
names and directory names when performing completion.
If not set, bbaasshh removes metacharacters such as the dol-
lar sign from the set of characters that will be quoted
in completed filenames when these metacharacters appear
in shell variable references in words to be completed.
This means that dollar signs in variable names that
expand to directories will not be quoted; however, any
dollar signs appearing in filenames will not be quoted,
either. This is active only when bash is using back-
slashes to quote completed filenames. This variable is
set by default, which is the default bash behavior in
lar sign from the set of characters that will be quoted
in completed filenames when these metacharacters appear
in shell variable references in words to be completed.
This means that dollar signs in variable names that
expand to directories will not be quoted; however, any
dollar signs appearing in filenames will not be quoted,
either. This is active only when bash is using back-
slashes to quote completed filenames. This variable is
set by default, which is the default bash behavior in
versions through 4.2.
ddiirreexxppaanndd
If set, bbaasshh replaces directory names with the results
of word expansion when performing filename completion.
This changes the contents of the readline editing buf-
fer. If not set, bbaasshh attempts to preserve what the
If set, bbaasshh replaces directory names with the results
of word expansion when performing filename completion.
This changes the contents of the readline editing buf-
fer. If not set, bbaasshh attempts to preserve what the
user typed.
ddiirrssppeellll
If set, bbaasshh attempts spelling correction on directory
names during word completion if the directory name ini-
If set, bbaasshh attempts spelling correction on directory
names during word completion if the directory name ini-
tially supplied does not exist.
ddoottgglloobb If set, bbaasshh includes filenames beginning with a `.' in
the results of pathname expansion. The filenames ````..''''
and ````....'''' must always be matched explicitly, even if
ddoottgglloobb If set, bbaasshh includes filenames beginning with a `.' in
the results of pathname expansion. The filenames ````..''''
and ````....'''' must always be matched explicitly, even if
ddoottgglloobb is set.
eexxeeccffaaiill
If set, a non-interactive shell will not exit if it can-
not execute the file specified as an argument to the
eexxeecc builtin command. An interactive shell does not
not execute the file specified as an argument to the
eexxeecc builtin command. An interactive shell does not
exit if eexxeecc fails.
eexxppaanndd__aalliiaasseess
If set, aliases are expanded as described above under
If set, aliases are expanded as described above under
AALLIIAASSEESS. This option is enabled by default for interac-
tive shells.
eexxttddeebbuugg
If set at shell invocation, arrange to execute the
debugger profile before the shell starts, identical to
the ----ddeebbuuggggeerr option. If set after invocation, behav-
If set at shell invocation, arrange to execute the
debugger profile before the shell starts, identical to
the ----ddeebbuuggggeerr option. If set after invocation, behav-
ior intended for use by debuggers is enabled:
11.. The --FF option to the ddeeccllaarree builtin displays the
source file name and line number corresponding to
each function name supplied as an argument.
22.. If the command run by the DDEEBBUUGG trap returns a
non-zero value, the next command is skipped and
22.. If the command run by the DDEEBBUUGG trap returns a
non-zero value, the next command is skipped and
not executed.
33.. If the command run by the DDEEBBUUGG trap returns a
value of 2, and the shell is executing in a sub-
routine (a shell function or a shell script exe-
cuted by the .. or ssoouurrccee builtins), the shell
33.. If the command run by the DDEEBBUUGG trap returns a
value of 2, and the shell is executing in a sub-
routine (a shell function or a shell script exe-
cuted by the .. or ssoouurrccee builtins), the shell
simulates a call to rreettuurrnn.
44.. BBAASSHH__AARRGGCC and BBAASSHH__AARRGGVV are updated as described
44.. BBAASSHH__AARRGGCC and BBAASSHH__AARRGGVV are updated as described
in their descriptions above.
55.. Function tracing is enabled: command substitu-
55.. Function tracing is enabled: command substitu-
tion, shell functions, and subshells invoked with
(( _c_o_m_m_a_n_d )) inherit the DDEEBBUUGG and RREETTUURRNN traps.
66.. Error tracing is enabled: command substitution,
shell functions, and subshells invoked with ((
66.. Error tracing is enabled: command substitution,
shell functions, and subshells invoked with ((
_c_o_m_m_a_n_d )) inherit the EERRRR trap.
eexxttgglloobb If set, the extended pattern matching features described
above under PPaatthhnnaammee EExxppaannssiioonn are enabled.
eexxttqquuoottee
If set, $$'_s_t_r_i_n_g' and $$"_s_t_r_i_n_g" quoting is performed
within $${{_p_a_r_a_m_e_t_e_r}} expansions enclosed in double
If set, $$'_s_t_r_i_n_g' and $$"_s_t_r_i_n_g" quoting is performed
within $${{_p_a_r_a_m_e_t_e_r}} expansions enclosed in double
quotes. This option is enabled by default.
ffaaiillgglloobb
If set, patterns which fail to match filenames during
If set, patterns which fail to match filenames during
pathname expansion result in an expansion error.
ffoorrccee__ffiiggnnoorree
If set, the suffixes specified by the FFIIGGNNOORREE shell
variable cause words to be ignored when performing word
If set, the suffixes specified by the FFIIGGNNOORREE shell
variable cause words to be ignored when performing word
completion even if the ignored words are the only possi-
ble completions. See SSHHEELLLL VVAARRIIAABBLLEESS above for a
description of FFIIGGNNOORREE. This option is enabled by
description of FFIIGGNNOORREE. This option is enabled by
default.
gglloobbaasscciiiirraannggeess
If set, range expressions used in pattern matching
bracket expressions (see PPaatttteerrnn MMaattcchhiinngg above) behave
as if in the traditional C locale when performing com-
If set, range expressions used in pattern matching
bracket expressions (see PPaatttteerrnn MMaattcchhiinngg above) behave
as if in the traditional C locale when performing com-
parisons. That is, the current locale's collating
sequence is not taken into account, so bb will not col-
late between AA and BB, and upper-case and lower-case
sequence is not taken into account, so bb will not col-
late between AA and BB, and upper-case and lower-case
ASCII characters will collate together.
gglloobbssttaarr
If set, the pattern **** used in a pathname expansion con-
text will match all files and zero or more directories
and subdirectories. If the pattern is followed by a //,
text will match all files and zero or more directories
and subdirectories. If the pattern is followed by a //,
only directories and subdirectories match.
ggnnuu__eerrrrffmmtt
If set, shell error messages are written in the standard
GNU error message format.
hhiissttaappppeenndd
If set, the history list is appended to the file named
by the value of the HHIISSTTFFIILLEE variable when the shell
If set, the history list is appended to the file named
by the value of the HHIISSTTFFIILLEE variable when the shell
exits, rather than overwriting the file.
hhiissttrreeeeddiitt
If set, and rreeaaddlliinnee is being used, a user is given the
If set, and rreeaaddlliinnee is being used, a user is given the
opportunity to re-edit a failed history substitution.
hhiissttvveerriiffyy
If set, and rreeaaddlliinnee is being used, the results of his-
tory substitution are not immediately passed to the
shell parser. Instead, the resulting line is loaded
If set, and rreeaaddlliinnee is being used, the results of his-
tory substitution are not immediately passed to the
shell parser. Instead, the resulting line is loaded
into the rreeaaddlliinnee editing buffer, allowing further modi-
fication.
hhoossttccoommpplleettee
If set, and rreeaaddlliinnee is being used, bbaasshh will attempt to
perform hostname completion when a word containing a @@
is being completed (see CCoommpplleettiinngg under RREEAADDLLIINNEE
perform hostname completion when a word containing a @@
is being completed (see CCoommpplleettiinngg under RREEAADDLLIINNEE
above). This is enabled by default.
hhuuppoonneexxiitt
If set, bbaasshh will send SSIIGGHHUUPP to all jobs when an inter-
active login shell exits.
iinnhheerriitt__eerrrreexxiitt
If set, command substitution inherits the value of the
eerrrreexxiitt option, instead of unsetting it in the subshell
environment. This option is enabled when _p_o_s_i_x _m_o_d_e is
If set, command substitution inherits the value of the
eerrrreexxiitt option, instead of unsetting it in the subshell
environment. This option is enabled when _p_o_s_i_x _m_o_d_e is
enabled.
iinntteerraaccttiivvee__ccoommmmeennttss
If set, allow a word beginning with ## to cause that word
and all remaining characters on that line to be ignored
in an interactive shell (see CCOOMMMMEENNTTSS above). This
and all remaining characters on that line to be ignored
in an interactive shell (see CCOOMMMMEENNTTSS above). This
option is enabled by default.
llaassttppiippee
If set, and job control is not active, the shell runs
If set, and job control is not active, the shell runs
the last command of a pipeline not executed in the back-
ground in the current shell environment.
lliitthhiisstt If set, and the ccmmddhhiisstt option is enabled, multi-line
lliitthhiisstt If set, and the ccmmddhhiisstt option is enabled, multi-line
commands are saved to the history with embedded newlines
rather than using semicolon separators where possible.
llooccaallvvaarr__iinnhheerriitt
If set, local variables inherit the value and attributes
of a variable of the same name that exists at a previous
scope before any new value is assigned. The nameref
scope before any new value is assigned. The nameref
attribute is not inherited.
llooccaallvvaarr__uunnsseett
If set, calling uunnsseett on local variables in previous
function scopes marks them so subsequent lookups find
them unset until that function returns. This is identi-
cal to the behavior of unsetting local variables at the
If set, calling uunnsseett on local variables in previous
function scopes marks them so subsequent lookups find
them unset until that function returns. This is identi-
cal to the behavior of unsetting local variables at the
current function scope.
llooggiinn__sshheellll
The shell sets this option if it is started as a login
shell (see IINNVVOOCCAATTIIOONN above). The value may not be
The shell sets this option if it is started as a login
shell (see IINNVVOOCCAATTIIOONN above). The value may not be
changed.
mmaaiillwwaarrnn
If set, and a file that bbaasshh is checking for mail has
been accessed since the last time it was checked, the
message ``The mail in _m_a_i_l_f_i_l_e has been read'' is dis-
If set, and a file that bbaasshh is checking for mail has
been accessed since the last time it was checked, the
message ``The mail in _m_a_i_l_f_i_l_e has been read'' is dis-
played.
nnoo__eemmppttyy__ccmmdd__ccoommpplleettiioonn
If set, and rreeaaddlliinnee is being used, bbaasshh will not
If set, and rreeaaddlliinnee is being used, bbaasshh will not
attempt to search the PPAATTHH for possible completions when
completion is attempted on an empty line.
nnooccaasseegglloobb
If set, bbaasshh matches filenames in a case-insensitive
If set, bbaasshh matches filenames in a case-insensitive
fashion when performing pathname expansion (see PPaatthhnnaammee
EExxppaannssiioonn above).
nnooccaasseemmaattcchh
If set, bbaasshh matches patterns in a case-insensitive
If set, bbaasshh matches patterns in a case-insensitive
fashion when performing matching while executing ccaassee or
[[[[ conditional commands, when performing pattern substi-
tution word expansions, or when filtering possible com-
tution word expansions, or when filtering possible com-
pletions as part of programmable completion.
nnuullllgglloobb
If set, bbaasshh allows patterns which match no files (see
PPaatthhnnaammee EExxppaannssiioonn above) to expand to a null string,
If set, bbaasshh allows patterns which match no files (see
PPaatthhnnaammee EExxppaannssiioonn above) to expand to a null string,
rather than themselves.
pprrooggccoommpp
If set, the programmable completion facilities (see PPrroo--
ggrraammmmaabbllee CCoommpplleettiioonn above) are enabled. This option is
enabled by default.
pprrooggccoommpp__aalliiaass
If set, and programmable completion is enabled, bbaasshh
treats a command name that doesn't have any completions
as a possible alias and attempts alias expansion. If it
has an alias, bbaasshh attempts programmable completion
using the command word resulting from the expanded
If set, and programmable completion is enabled, bbaasshh
treats a command name that doesn't have any completions
as a possible alias and attempts alias expansion. If it
has an alias, bbaasshh attempts programmable completion
using the command word resulting from the expanded
alias.
pprroommppttvvaarrss
If set, prompt strings undergo parameter expansion, com-
mand substitution, arithmetic expansion, and quote
removal after being expanded as described in PPRROOMMPPTTIINNGG
mand substitution, arithmetic expansion, and quote
removal after being expanded as described in PPRROOMMPPTTIINNGG
above. This option is enabled by default.
rreessttrriicctteedd__sshheellll
The shell sets this option if it is started in
The shell sets this option if it is started in
restricted mode (see RREESSTTRRIICCTTEEDD SSHHEELLLL below). The value
may not be changed. This is not reset when the startup
files are executed, allowing the startup files to dis-
may not be changed. This is not reset when the startup
files are executed, allowing the startup files to dis-
cover whether or not a shell is restricted.
sshhiifftt__vveerrbboossee
If set, the sshhiifftt builtin prints an error message when
If set, the sshhiifftt builtin prints an error message when
the shift count exceeds the number of positional parame-
ters.
ssoouurrcceeppaatthh
If set, the ssoouurrccee (..) builtin uses the value of PPAATTHH to
find the directory containing the file supplied as an
find the directory containing the file supplied as an
argument. This option is enabled by default.
xxppgg__eecchhoo
If set, the eecchhoo builtin expands backslash-escape
If set, the eecchhoo builtin expands backslash-escape
sequences by default.
ssuussppeenndd [--ff]
Suspend the execution of this shell until it receives a SSIIGGCCOONNTT
Suspend the execution of this shell until it receives a SSIIGGCCOONNTT
signal. A login shell cannot be suspended; the --ff option can be
used to override this and force the suspension. The return sta-
tus is 0 unless the shell is a login shell and --ff is not sup-
tus is 0 unless the shell is a login shell and --ff is not sup-
plied, or if job control is not enabled.
tteesstt _e_x_p_r
[[ _e_x_p_r ]]
Return a status of 0 (true) or 1 (false) depending on the evalu-
ation of the conditional expression _e_x_p_r. Each operator and op-
erand must be a separate argument. Expressions are composed of
the primaries described above under CCOONNDDIITTIIOONNAALL EEXXPPRREESSSSIIOONNSS.
tteesstt does not accept any options, nor does it accept and ignore
erand must be a separate argument. Expressions are composed of
the primaries described above under CCOONNDDIITTIIOONNAALL EEXXPPRREESSSSIIOONNSS.
tteesstt does not accept any options, nor does it accept and ignore
an argument of ---- as signifying the end of options.
Expressions may be combined using the following operators,
Expressions may be combined using the following operators,
listed in decreasing order of precedence. The evaluation
depends on the number of arguments; see below. Operator prece-
depends on the number of arguments; see below. Operator prece-
dence is used when there are five or more arguments.
!! _e_x_p_r True if _e_x_p_r is false.
(( _e_x_p_r ))
Returns the value of _e_x_p_r. This may be used to override
Returns the value of _e_x_p_r. This may be used to override
the normal precedence of operators.
_e_x_p_r_1 -aa _e_x_p_r_2
True if both _e_x_p_r_1 and _e_x_p_r_2 are true.
@@ -1640,120 +1641,120 @@ BBAASSHH BBUUIILLTTIINN CCOOMMMMAANNDDSS
null.
2 arguments
If the first argument is !!, the expression is true if and
only if the second argument is null. If the first argu-
ment is one of the unary conditional operators listed
above under CCOONNDDIITTIIOONNAALL EEXXPPRREESSSSIIOONNSS, the expression is
only if the second argument is null. If the first argu-
ment is one of the unary conditional operators listed
above under CCOONNDDIITTIIOONNAALL EEXXPPRREESSSSIIOONNSS, the expression is
true if the unary test is true. If the first argument is
not a valid unary conditional operator, the expression is
false.
3 arguments
The following conditions are applied in the order listed.
If the second argument is one of the binary conditional
If the second argument is one of the binary conditional
operators listed above under CCOONNDDIITTIIOONNAALL EEXXPPRREESSSSIIOONNSS, the
result of the expression is the result of the binary test
using the first and third arguments as operands. The --aa
and --oo operators are considered binary operators when
there are three arguments. If the first argument is !!,
the value is the negation of the two-argument test using
using the first and third arguments as operands. The --aa
and --oo operators are considered binary operators when
there are three arguments. If the first argument is !!,
the value is the negation of the two-argument test using
the second and third arguments. If the first argument is
exactly (( and the third argument is exactly )), the result
is the one-argument test of the second argument. Other-
is the one-argument test of the second argument. Other-
wise, the expression is false.
4 arguments
If the first argument is !!, the result is the negation of
the three-argument expression composed of the remaining
the three-argument expression composed of the remaining
arguments. Otherwise, the expression is parsed and eval-
uated according to precedence using the rules listed
uated according to precedence using the rules listed
above.
5 or more arguments
The expression is parsed and evaluated according to
The expression is parsed and evaluated according to
precedence using the rules listed above.
When used with tteesstt or [[, the << and >> operators sort lexico-
When used with tteesstt or [[, the << and >> operators sort lexico-
graphically using ASCII ordering.
ttiimmeess Print the accumulated user and system times for the shell and
ttiimmeess Print the accumulated user and system times for the shell and
for processes run from the shell. The return status is 0.
ttrraapp [--llpp] [[_a_r_g] _s_i_g_s_p_e_c ...]
The command _a_r_g is to be read and executed when the shell
receives signal(s) _s_i_g_s_p_e_c. If _a_r_g is absent (and there is a
single _s_i_g_s_p_e_c) or --, each specified signal is reset to its
original disposition (the value it had upon entrance to the
shell). If _a_r_g is the null string the signal specified by each
_s_i_g_s_p_e_c is ignored by the shell and by the commands it invokes.
If _a_r_g is not present and --pp has been supplied, then the trap
commands associated with each _s_i_g_s_p_e_c are displayed. If no
arguments are supplied or if only --pp is given, ttrraapp prints the
list of commands associated with each signal. The --ll option
causes the shell to print a list of signal names and their cor-
responding numbers. Each _s_i_g_s_p_e_c is either a signal name
defined in <_s_i_g_n_a_l_._h>, or a signal number. Signal names are
The command _a_r_g is to be read and executed when the shell
receives signal(s) _s_i_g_s_p_e_c. If _a_r_g is absent (and there is a
single _s_i_g_s_p_e_c) or --, each specified signal is reset to its
original disposition (the value it had upon entrance to the
shell). If _a_r_g is the null string the signal specified by each
_s_i_g_s_p_e_c is ignored by the shell and by the commands it invokes.
If _a_r_g is not present and --pp has been supplied, then the trap
commands associated with each _s_i_g_s_p_e_c are displayed. If no
arguments are supplied or if only --pp is given, ttrraapp prints the
list of commands associated with each signal. The --ll option
causes the shell to print a list of signal names and their cor-
responding numbers. Each _s_i_g_s_p_e_c is either a signal name
defined in <_s_i_g_n_a_l_._h>, or a signal number. Signal names are
case insensitive and the SSIIGG prefix is optional.
If a _s_i_g_s_p_e_c is EEXXIITT (0) the command _a_r_g is executed on exit
from the shell. If a _s_i_g_s_p_e_c is DDEEBBUUGG, the command _a_r_g is exe-
cuted before every _s_i_m_p_l_e _c_o_m_m_a_n_d, _f_o_r command, _c_a_s_e command,
_s_e_l_e_c_t command, every arithmetic _f_o_r command, and before the
first command executes in a shell function (see SSHHEELLLL GGRRAAMMMMAARR
above). Refer to the description of the eexxttddeebbuugg option to the
If a _s_i_g_s_p_e_c is EEXXIITT (0) the command _a_r_g is executed on exit
from the shell. If a _s_i_g_s_p_e_c is DDEEBBUUGG, the command _a_r_g is exe-
cuted before every _s_i_m_p_l_e _c_o_m_m_a_n_d, _f_o_r command, _c_a_s_e command,
_s_e_l_e_c_t command, every arithmetic _f_o_r command, and before the
first command executes in a shell function (see SSHHEELLLL GGRRAAMMMMAARR
above). Refer to the description of the eexxttddeebbuugg option to the
sshhoopptt builtin for details of its effect on the DDEEBBUUGG trap. If a
_s_i_g_s_p_e_c is RREETTUURRNN, the command _a_r_g is executed each time a shell
function or a script executed with the .. or ssoouurrccee builtins fin-
ishes executing.
If a _s_i_g_s_p_e_c is EERRRR, the command _a_r_g is executed whenever a
If a _s_i_g_s_p_e_c is EERRRR, the command _a_r_g is executed whenever a
pipeline (which may consist of a single simple command), a list,
or a compound command returns a non-zero exit status, subject to
the following conditions. The EERRRR trap is not executed if the
the following conditions. The EERRRR trap is not executed if the
failed command is part of the command list immediately following
a wwhhiillee or uunnttiill keyword, part of the test in an _i_f statement,
a wwhhiillee or uunnttiill keyword, part of the test in an _i_f statement,
part of a command executed in a &&&& or |||| list except the command
following the final &&&& or ||||, any command in a pipeline but the
last, or if the command's return value is being inverted using
!!. These are the same conditions obeyed by the eerrrreexxiitt (--ee)
following the final &&&& or ||||, any command in a pipeline but the
last, or if the command's return value is being inverted using
!!. These are the same conditions obeyed by the eerrrreexxiitt (--ee)
option.
Signals ignored upon entry to the shell cannot be trapped or
reset. Trapped signals that are not being ignored are reset to
Signals ignored upon entry to the shell cannot be trapped or
reset. Trapped signals that are not being ignored are reset to
their original values in a subshell or subshell environment when
one is created. The return status is false if any _s_i_g_s_p_e_c is
one is created. The return status is false if any _s_i_g_s_p_e_c is
invalid; otherwise ttrraapp returns true.
ttyyppee [--aaffttppPP] _n_a_m_e [_n_a_m_e ...]
With no options, indicate how each _n_a_m_e would be interpreted if
With no options, indicate how each _n_a_m_e would be interpreted if
used as a command name. If the --tt option is used, ttyyppee prints a
string which is one of _a_l_i_a_s, _k_e_y_w_o_r_d, _f_u_n_c_t_i_o_n, _b_u_i_l_t_i_n, or
_f_i_l_e if _n_a_m_e is an alias, shell reserved word, function,
builtin, or disk file, respectively. If the _n_a_m_e is not found,
then nothing is printed, and an exit status of false is
returned. If the --pp option is used, ttyyppee either returns the
string which is one of _a_l_i_a_s, _k_e_y_w_o_r_d, _f_u_n_c_t_i_o_n, _b_u_i_l_t_i_n, or
_f_i_l_e if _n_a_m_e is an alias, shell reserved word, function,
builtin, or disk file, respectively. If the _n_a_m_e is not found,
then nothing is printed, and an exit status of false is
returned. If the --pp option is used, ttyyppee either returns the
name of the disk file that would be executed if _n_a_m_e were speci-
fied as a command name, or nothing if ``type -t name'' would not
return _f_i_l_e. The --PP option forces a PPAATTHH search for each _n_a_m_e,
return _f_i_l_e. The --PP option forces a PPAATTHH search for each _n_a_m_e,
even if ``type -t name'' would not return _f_i_l_e. If a command is
hashed, --pp and --PP print the hashed value, which is not necessar-
ily the file that appears first in PPAATTHH. If the --aa option is
used, ttyyppee prints all of the places that contain an executable
ily the file that appears first in PPAATTHH. If the --aa option is
used, ttyyppee prints all of the places that contain an executable
named _n_a_m_e. This includes aliases and functions, if and only if
the --pp option is not also used. The table of hashed commands is
not consulted when using --aa. The --ff option suppresses shell
not consulted when using --aa. The --ff option suppresses shell
function lookup, as with the ccoommmmaanndd builtin. ttyyppee returns true
if all of the arguments are found, false if any are not found.
uulliimmiitt [--HHSSaabbccddeeffiikkllmmnnppqqrrssttuuvvxxPPTT [_l_i_m_i_t]]
Provides control over the resources available to the shell and
to processes started by it, on systems that allow such control.
Provides control over the resources available to the shell and
to processes started by it, on systems that allow such control.
The --HH and --SS options specify that the hard or soft limit is set
for the given resource. A hard limit cannot be increased by a
non-root user once it is set; a soft limit may be increased up
to the value of the hard limit. If neither --HH nor --SS is speci-
for the given resource. A hard limit cannot be increased by a
non-root user once it is set; a soft limit may be increased up
to the value of the hard limit. If neither --HH nor --SS is speci-
fied, both the soft and hard limits are set. The value of _l_i_m_i_t
can be a number in the unit specified for the resource or one of
the special values hhaarrdd, ssoofftt, or uunnlliimmiitteedd, which stand for the
current hard limit, the current soft limit, and no limit,
respectively. If _l_i_m_i_t is omitted, the current value of the
soft limit of the resource is printed, unless the --HH option is
current hard limit, the current soft limit, and no limit,
respectively. If _l_i_m_i_t is omitted, the current value of the
soft limit of the resource is printed, unless the --HH option is
given. When more than one resource is specified, the limit name
and unit are printed before the value. Other options are inter-
preted as follows:
@@ -1762,12 +1763,12 @@ BBAASSHH BBUUIILLTTIINN CCOOMMMMAANNDDSS
--cc The maximum size of core files created
--dd The maximum size of a process's data segment
--ee The maximum scheduling priority ("nice")
--ff The maximum size of files written by the shell and its
--ff The maximum size of files written by the shell and its
children
--ii The maximum number of pending signals
--kk The maximum number of kqueues that may be allocated
--ll The maximum size that may be locked into memory
--mm The maximum resident set size (many systems do not honor
--mm The maximum resident set size (many systems do not honor
this limit)
--nn The maximum number of open file descriptors (most systems
do not allow this value to be set)
@@ -1776,53 +1777,53 @@ BBAASSHH BBUUIILLTTIINN CCOOMMMMAANNDDSS
--rr The maximum real-time scheduling priority
--ss The maximum stack size
--tt The maximum amount of cpu time in seconds
--uu The maximum number of processes available to a single
--uu The maximum number of processes available to a single
user
--vv The maximum amount of virtual memory available to the
--vv The maximum amount of virtual memory available to the
shell and, on some systems, to its children
--xx The maximum number of file locks
--PP The maximum number of pseudoterminals
--TT The maximum number of threads
If _l_i_m_i_t is given, and the --aa option is not used, _l_i_m_i_t is the
new value of the specified resource. If no option is given,
then --ff is assumed. Values are in 1024-byte increments, except
for --tt, which is in seconds; --pp, which is in units of 512-byte
blocks; --PP, --TT, --bb, --kk, --nn, and --uu, which are unscaled values;
If _l_i_m_i_t is given, and the --aa option is not used, _l_i_m_i_t is the
new value of the specified resource. If no option is given,
then --ff is assumed. Values are in 1024-byte increments, except
for --tt, which is in seconds; --pp, which is in units of 512-byte
blocks; --PP, --TT, --bb, --kk, --nn, and --uu, which are unscaled values;
and, when in posix mode, --cc and --ff, which are in 512-byte incre-
ments. The return status is 0 unless an invalid option or argu-
ment is supplied, or an error occurs while setting a new limit.
uummaasskk [--pp] [--SS] [_m_o_d_e]
The user file-creation mask is set to _m_o_d_e. If _m_o_d_e begins with
a digit, it is interpreted as an octal number; otherwise it is
interpreted as a symbolic mode mask similar to that accepted by
_c_h_m_o_d(1). If _m_o_d_e is omitted, the current value of the mask is
printed. The --SS option causes the mask to be printed in sym-
bolic form; the default output is an octal number. If the --pp
a digit, it is interpreted as an octal number; otherwise it is
interpreted as a symbolic mode mask similar to that accepted by
_c_h_m_o_d(1). If _m_o_d_e is omitted, the current value of the mask is
printed. The --SS option causes the mask to be printed in sym-
bolic form; the default output is an octal number. If the --pp
option is supplied, and _m_o_d_e is omitted, the output is in a form
that may be reused as input. The return status is 0 if the mode
was successfully changed or if no _m_o_d_e argument was supplied,
was successfully changed or if no _m_o_d_e argument was supplied,
and false otherwise.
uunnaalliiaass [-aa] [_n_a_m_e ...]
Remove each _n_a_m_e from the list of defined aliases. If --aa is
supplied, all alias definitions are removed. The return value
Remove each _n_a_m_e from the list of defined aliases. If --aa is
supplied, all alias definitions are removed. The return value
is true unless a supplied _n_a_m_e is not a defined alias.
uunnsseett [-ffvv] [-nn] [_n_a_m_e ...]
For each _n_a_m_e, remove the corresponding variable or function.
For each _n_a_m_e, remove the corresponding variable or function.
If the --vv option is given, each _n_a_m_e refers to a shell variable,
and that variable is removed. Read-only variables may not be
unset. If --ff is specified, each _n_a_m_e refers to a shell func-
tion, and the function definition is removed. If the --nn option
is supplied, and _n_a_m_e is a variable with the _n_a_m_e_r_e_f attribute,
_n_a_m_e will be unset rather than the variable it references. --nn
has no effect if the --ff option is supplied. If no options are
supplied, each _n_a_m_e refers to a variable; if there is no vari-
able by that name, any function with that name is unset. Each
unset variable or function is removed from the environment
passed to subsequent commands. If any of CCOOMMPP__WWOORRDDBBRREEAAKKSS, RRAANN--
and that variable is removed. Read-only variables may not be
unset. If --ff is specified, each _n_a_m_e refers to a shell func-
tion, and the function definition is removed. If the --nn option
is supplied, and _n_a_m_e is a variable with the _n_a_m_e_r_e_f attribute,
_n_a_m_e will be unset rather than the variable it references. --nn
has no effect if the --ff option is supplied. If no options are
supplied, each _n_a_m_e refers to a variable; if there is no vari-
able by that name, any function with that name is unset. Each
unset variable or function is removed from the environment
passed to subsequent commands. If any of CCOOMMPP__WWOORRDDBBRREEAAKKSS, RRAANN--
DDOOMM, SSEECCOONNDDSS, LLIINNEENNOO, HHIISSTTCCMMDD, FFUUNNCCNNAAMMEE, GGRROOUUPPSS, or DDIIRRSSTTAACCKK are
unset, they lose their special properties, even if they are sub-
sequently reset. The exit status is true unless a _n_a_m_e is read-
@@ -1830,16 +1831,16 @@ BBAASSHH BBUUIILLTTIINN CCOOMMMMAANNDDSS
wwaaiitt [--ffnn] [_i_d _._._.]
Wait for each specified child process and return its termination
status. Each _i_d may be a process ID or a job specification; if
a job spec is given, all processes in that job's pipeline are
status. Each _i_d may be a process ID or a job specification; if
a job spec is given, all processes in that job's pipeline are
waited for. If _i_d is not given, all currently active child pro-
cesses are waited for, and the return status is zero. If the --nn
option is supplied, wwaaiitt waits for any job to terminate and
returns its exit status. If the --ff option is supplied, and job
option is supplied, wwaaiitt waits for any job to terminate and
returns its exit status. If the --ff option is supplied, and job
control is enabled, wwaaiitt forces _i_d to terminate before returning
its status, instead of returning when it changes status. If _i_d
specifies a non-existent process or job, the return status is
127. Otherwise, the return status is the exit status of the
its status, instead of returning when it changes status. If _i_d
specifies a non-existent process or job, the return status is
127. Otherwise, the return status is the exit status of the
last process or job waited for.
SSEEEE AALLSSOO
doc/builtins.ps
+7 -5
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@@ -1,6 +1,6 @@
%!PS-Adobe-3.0
%%Creator: groff version 1.22.3
%%CreationDate: Fri Dec 21 09:58:50 2018
%%CreationDate: Wed Jan 2 09:14:38 2019
%%DocumentNeededResources: font Times-Roman
%%+ font Times-Bold
%%+ font Times-Italic
@@ -2327,10 +2327,12 @@ E(UIL)-.1 E(TINS\(1\))-.92 E(The list of)144 84 Q/F1 10/Times-Bold@0 SF
(shopt)2.5 E F0(options is:)2.5 E F1(assoc_expand_once)144 102 Q F0
1.945(If set, the shell suppresses multiple e)184 114 R -.25(va)-.25 G
1.944(luation of associati).25 F 2.244 -.15(ve a)-.25 H 1.944
(rray subscripts during).15 F .857(arithmetic e)184 126 R .857
(xpression e)-.15 F -.25(va)-.25 G .857(luation and while e).25 F -.15
(xe)-.15 G .857(cuting b).15 F .857(uiltins that can perform v)-.2 F
(ariable)-.25 E(assignments.)184 138 Q F1(autocd)144 150 Q F0 .2
(rray subscripts during).15 F 2.556(arithmetic e)184 126 R 2.556
(xpression e)-.15 F -.25(va)-.25 G 2.556(luation, while e).25 F -.15(xe)
-.15 G 2.557(cuting b).15 F 2.557(uiltins that can perform v)-.2 F
(ariable)-.25 E(assignments, and while e)184 138 Q -.15(xe)-.15 G
(cuting b).15 E(uiltins that perform array dereferencing.)-.2 E F1
(autocd)144 150 Q F0 .2
(If set, a command name that is the name of a directory is e)184 150 R
-.15(xe)-.15 G .199(cuted as if it were the ar).15 F(gu-)-.18 E
(ment to the)184 162 Q F1(cd)2.5 E F0 2.5(command. This)2.5 F
doc/rbash.ps
+1 -1
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@@ -1,6 +1,6 @@
%!PS-Adobe-3.0
%%Creator: groff version 1.22.3
%%CreationDate: Fri Dec 21 09:58:50 2018
%%CreationDate: Wed Jan 2 09:14:38 2019
%%DocumentNeededResources: font Times-Roman
%%+ font Times-Bold
%%DocumentSuppliedResources: procset grops 1.22 3
examples/loadables/basename.c
+1
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@@ -30,6 +30,7 @@
#include "builtins.h"
#include "shell.h"
#include "common.h"
#include "bashgetopt.h"
int
basename_builtin (list)
execute_cmd.c
+3
View File
@@ -4504,6 +4504,9 @@ run_builtin:
if (builtin_is_special)
special_builtin_failed = 1; /* XXX - take command builtin into account? */
}
else
special_builtin_failed = builtin_is_special && result != EXECUTION_SUCCESS;
/* In POSIX mode, if there are assignment statements preceding
a special builtin, they persist after the builtin
completes. */
hashlib.c
+2
View File
@@ -392,6 +392,7 @@ hash_pstats (table, name)
HASH_TABLE *table, *ntable;
int interrupt_immediately = 0;
int running_trap = 0;
int
signal_is_trapped (s)
@@ -417,6 +418,7 @@ internal_warning (const char *format, ...)
{
}
int
main ()
{
char string[256];
lib/malloc/malloc.c
+4
View File
@@ -84,6 +84,10 @@
#include <errno.h>
#include <stdio.h>
#if !defined (botch)
#include <stdlib.h>
#endif
#if defined (HAVE_MMAP)
#include <sys/mman.h>
#endif
lib/sh/unicode.c
+4 -4
View File
@@ -216,21 +216,21 @@ u32toutf8 (wc, s)
int
u32toutf16 (c, s)
u_bits32_t c;
unsigned short *s;
wchar_t *s;
{
int l;
l = 0;
if (c < 0x0d800 || (c >= 0x0e000 && c <= 0x0ffff))
{
s[0] = (unsigned short) (c & 0xFFFF);
s[0] = (wchar_t) (c & 0xFFFF);
l = 1;
}
else if (c >= 0x10000 && c <= 0x010ffff)
{
c -= 0x010000;
s[0] = (unsigned short)((c >> 10) + 0xd800);
s[1] = (unsigned short)((c & 0x3ff) + 0xdc00);
s[0] = (wchar_t)((c >> 10) + 0xd800);
s[1] = (wchar_t)((c & 0x3ff) + 0xdc00);
l = 2;
}
s[l] = 0;
parse.y
-3
View File
@@ -419,10 +419,7 @@ inputunit: simple_list simple_list_terminator
only interesting in non-interactive shells */
global_command = (COMMAND *)NULL;
if (last_command_exit_value == 0)
{
itrace("parser: forcing EX_BADUSAGE; executing_command_builtin = %d", executing_command_builtin);
last_command_exit_value = EX_BADUSAGE; /* force error return */
}
handle_eof_input_unit ();
if (interactive && parse_and_execute_level == 0)
{
tests/RUN-ONE-TEST
+1 -1
View File
@@ -1,4 +1,4 @@
BUILD_DIR=/usr/local/build/bash/bash-current
BUILD_DIR=/usr/local/build/chet/bash/bash-current
THIS_SH=$BUILD_DIR/bash
PATH=$PATH:$BUILD_DIR
version.c
+2 -2
View File
@@ -1,6 +1,6 @@
/* version.c -- distribution and version numbers. */
/* Copyright (C) 1989-2018 Free Software Foundation, Inc.
/* Copyright (C) 1989-2019 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
@@ -43,7 +43,7 @@ const char * const release_status = (char *)0;
#endif
const char * const sccs_version = SCCSVERSION;
const char * const bash_copyright = N_("Copyright (C) 2018 Free Software Foundation, Inc.");
const char * const bash_copyright = N_("Copyright (C) 2019 Free Software Foundation, Inc.");
const char * const bash_license = N_("License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n");
/* If == 31, shell compatible with bash-3.1, == 32 with bash-3.2, and so on */
version2.c
+2 -2
View File
@@ -1,6 +1,6 @@
/* version.c -- distribution and version numbers. */
/* Copyright (C) 1989-2018 Free Software Foundation, Inc.
/* Copyright (C) 1989-2019 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
@@ -43,7 +43,7 @@ const char * const release_status = (char *)0;
#endif
const char * const sccs_version = SCCSVERSION;
const char * const bash_copyright = N_("Copyright (C) 2018 Free Software Foundation, Inc.");
const char * const bash_copyright = N_("Copyright (C) 2019 Free Software Foundation, Inc.");
const char * const bash_license = N_("License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n");
/* If == 31, shell compatible with bash-3.1, == 32 with bash-3.2, and so on */