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commit bash-20150410 snapshot

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Chet Ramey
2015-04-24 16:15:03 -04:00
parent ddece28e53
commit 0385211bb5
34 changed files with 6160 additions and 5935 deletions
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@@ -130,27 +130,29 @@ IINNVVOOCCAATTIIOONN
A _l_o_g_i_n _s_h_e_l_l is one whose first character of argument zero is a --, or
one started with the ----llooggiinn option.
An _i_n_t_e_r_a_c_t_i_v_e shell is one started without non-option arguments and
without the --cc option whose standard input and error are both connected
to terminals (as determined by _i_s_a_t_t_y(3)), or one started with the --ii
option. PPSS11 is set and $$-- includes ii if bbaasshh is interactive, allowing
a shell script or a startup file to test this state.
An _i_n_t_e_r_a_c_t_i_v_e shell is one started without non-option arguments
(unless --ss is specified) and without the --cc option whose standard input
and error are both connected to terminals (as determined by _i_s_a_t_t_y(3)),
or one started with the --ii option. PPSS11 is set and $$-- includes ii if
bbaasshh is interactive, allowing a shell script or a startup file to test
this state.
The following paragraphs describe how bbaasshh executes its startup files.
If any of the files exist but cannot be read, bbaasshh reports an error.
Tildes are expanded in filenames as described below under TTiillddee EExxppaann--
The following paragraphs describe how bbaasshh executes its startup files.
If any of the files exist but cannot be read, bbaasshh reports an error.
Tildes are expanded in filenames as described below under TTiillddee EExxppaann--
ssiioonn in the EEXXPPAANNSSIIOONN section.
When bbaasshh is invoked as an interactive login shell, or as a non-inter-
active shell with the ----llooggiinn option, it first reads and executes com-
mands from the file _/_e_t_c_/_p_r_o_f_i_l_e, if that file exists. After reading
When bbaasshh is invoked as an interactive login shell, or as a non-inter-
active shell with the ----llooggiinn option, it first reads and executes com-
mands from the file _/_e_t_c_/_p_r_o_f_i_l_e, if that file exists. After reading
that file, it looks for _~_/_._b_a_s_h___p_r_o_f_i_l_e, _~_/_._b_a_s_h___l_o_g_i_n, and _~_/_._p_r_o_f_i_l_e,
in that order, and reads and executes commands from the first one that
exists and is readable. The ----nnoopprrooffiillee option may be used when the
in that order, and reads and executes commands from the first one that
exists and is readable. The ----nnoopprrooffiillee option may be used when the
shell is started to inhibit this behavior.
When a login shell exits, bbaasshh reads and executes commands from the
file _~_/_._b_a_s_h___l_o_g_o_u_t, if it exists.
When an interactive login shell exits, or a non-interactive login shell
executes the eexxiitt builtin command, bbaasshh reads and executes commands
from the file _~_/_._b_a_s_h___l_o_g_o_u_t, if it exists.
When an interactive shell that is not a login shell is started, bbaasshh
reads and executes commands from _~_/_._b_a_s_h_r_c, if that file exists. This
@@ -4761,138 +4763,139 @@ SSHHEELLLL BBUUIILLTTIINN CCOOMMMMAANNDDSS
--OO Begin assigning to _a_r_r_a_y at index _o_r_i_g_i_n. The default
index is 0.
--ss Discard the first _c_o_u_n_t lines read.
--tt Remove a trailing newline from each line read.
--uu Read lines from file descriptor _f_d instead of the stan-
--tt Remove a trailing _d_e_l_i_m (default newline) from each line
read.
--uu Read lines from file descriptor _f_d instead of the stan-
dard input.
--CC Evaluate _c_a_l_l_b_a_c_k each time _q_u_a_n_t_u_m lines are read. The
--CC Evaluate _c_a_l_l_b_a_c_k each time _q_u_a_n_t_u_m lines are read. The
--cc option specifies _q_u_a_n_t_u_m.
--cc Specify the number of lines read between each call to
--cc Specify the number of lines read between each call to
_c_a_l_l_b_a_c_k.
If --CC is specified without --cc, the default quantum is 5000.
If --CC is specified without --cc, the default quantum is 5000.
When _c_a_l_l_b_a_c_k is evaluated, it is supplied the index of the next
array element to be assigned and the line to be assigned to that
element as additional arguments. _c_a_l_l_b_a_c_k is evaluated after
element as additional arguments. _c_a_l_l_b_a_c_k is evaluated after
the line is read but before the array element is assigned.
If not supplied with an explicit origin, mmaappffiillee will clear
If not supplied with an explicit origin, mmaappffiillee will clear
_a_r_r_a_y before assigning to it.
mmaappffiillee returns successfully unless an invalid option or option
argument is supplied, _a_r_r_a_y is invalid or unassignable, or if
mmaappffiillee returns successfully unless an invalid option or option
argument is supplied, _a_r_r_a_y is invalid or unassignable, or if
_a_r_r_a_y is not an indexed array.
ppooppdd [-nn] [+_n] [-_n]
Removes entries from the directory stack. With no arguments,
removes the top directory from the stack, and performs a ccdd to
Removes entries from the directory stack. With no arguments,
removes the top directory from the stack, and performs a ccdd to
the new top directory. Arguments, if supplied, have the follow-
ing meanings:
--nn Suppresses the normal change of directory when removing
directories from the stack, so that only the stack is
--nn Suppresses the normal change of directory when removing
directories from the stack, so that only the stack is
manipulated.
++_n Removes the _nth entry counting from the left of the list
shown by ddiirrss, starting with zero. For example: ``popd
++_n Removes the _nth entry counting from the left of the list
shown by ddiirrss, starting with zero. For example: ``popd
+0'' removes the first directory, ``popd +1'' the second.
--_n Removes the _nth entry counting from the right of the list
shown by ddiirrss, starting with zero. For example: ``popd
-0'' removes the last directory, ``popd -1'' the next to
shown by ddiirrss, starting with zero. For example: ``popd
-0'' removes the last directory, ``popd -1'' the next to
last.
If the ppooppdd command is successful, a ddiirrss is performed as well,
and the return status is 0. ppooppdd returns false if an invalid
If the ppooppdd command is successful, a ddiirrss is performed as well,
and the return status is 0. ppooppdd returns false if an invalid
option is encountered, the directory stack is empty, a non-exis-
tent directory stack entry is specified, or the directory change
fails.
pprriinnttff [--vv _v_a_r] _f_o_r_m_a_t [_a_r_g_u_m_e_n_t_s]
Write the formatted _a_r_g_u_m_e_n_t_s to the standard output under the
control of the _f_o_r_m_a_t. The --vv option causes the output to be
assigned to the variable _v_a_r rather than being printed to the
Write the formatted _a_r_g_u_m_e_n_t_s to the standard output under the
control of the _f_o_r_m_a_t. The --vv option causes the output to be
assigned to the variable _v_a_r rather than being printed to the
standard output.
The _f_o_r_m_a_t is a character string which contains three types of
objects: plain characters, which are simply copied to standard
output, character escape sequences, which are converted and
copied to the standard output, and format specifications, each
of which causes printing of the next successive _a_r_g_u_m_e_n_t. In
The _f_o_r_m_a_t is a character string which contains three types of
objects: plain characters, which are simply copied to standard
output, character escape sequences, which are converted and
copied to the standard output, and format specifications, each
of which causes printing of the next successive _a_r_g_u_m_e_n_t. In
addition to the standard _p_r_i_n_t_f(1) format specifications, pprriinnttff
interprets the following extensions:
%%bb causes pprriinnttff to expand backslash escape sequences in the
corresponding _a_r_g_u_m_e_n_t (except that \\cc terminates output,
backslashes in \\'', \\"", and \\?? are not removed, and octal
backslashes in \\'', \\"", and \\?? are not removed, and octal
escapes beginning with \\00 may contain up to four digits).
%%qq causes pprriinnttff to output the corresponding _a_r_g_u_m_e_n_t in a
%%qq causes pprriinnttff to output the corresponding _a_r_g_u_m_e_n_t in a
format that can be reused as shell input.
%%((_d_a_t_e_f_m_t))TT
causes pprriinnttff to output the date-time string resulting
from using _d_a_t_e_f_m_t as a format string for _s_t_r_f_t_i_m_e(3).
causes pprriinnttff to output the date-time string resulting
from using _d_a_t_e_f_m_t as a format string for _s_t_r_f_t_i_m_e(3).
The corresponding _a_r_g_u_m_e_n_t is an integer representing the
number of seconds since the epoch. Two special argument
values may be used: -1 represents the current time, and
-2 represents the time the shell was invoked. If no
argument is specified, conversion behaves as if -1 had
been given. This is an exception to the usual pprriinnttff
number of seconds since the epoch. Two special argument
values may be used: -1 represents the current time, and
-2 represents the time the shell was invoked. If no
argument is specified, conversion behaves as if -1 had
been given. This is an exception to the usual pprriinnttff
behavior.
Arguments to non-string format specifiers are treated as C con-
Arguments to non-string format specifiers are treated as C con-
stants, except that a leading plus or minus sign is allowed, and
if the leading character is a single or double quote, the value
if the leading character is a single or double quote, the value
is the ASCII value of the following character.
The _f_o_r_m_a_t is reused as necessary to consume all of the _a_r_g_u_-
The _f_o_r_m_a_t is reused as necessary to consume all of the _a_r_g_u_-
_m_e_n_t_s. If the _f_o_r_m_a_t requires more _a_r_g_u_m_e_n_t_s than are supplied,
the extra format specifications behave as if a zero value or
null string, as appropriate, had been supplied. The return
the extra format specifications behave as if a zero value or
null string, as appropriate, had been supplied. The return
value is zero on success, non-zero on failure.
ppuusshhdd [--nn] [+_n] [-_n]
ppuusshhdd [--nn] [_d_i_r]
Adds a directory to the top of the directory stack, or rotates
the stack, making the new top of the stack the current working
Adds a directory to the top of the directory stack, or rotates
the stack, making the new top of the stack the current working
directory. With no arguments, exchanges the top two directories
and returns 0, unless the directory stack is empty. Arguments,
and returns 0, unless the directory stack is empty. Arguments,
if supplied, have the following meanings:
--nn Suppresses the normal change of directory when adding
directories to the stack, so that only the stack is
--nn Suppresses the normal change of directory when adding
directories to the stack, so that only the stack is
manipulated.
++_n Rotates the stack so that the _nth directory (counting
from the left of the list shown by ddiirrss, starting with
++_n Rotates the stack so that the _nth directory (counting
from the left of the list shown by ddiirrss, starting with
zero) is at the top.
--_n Rotates the stack so that the _nth directory (counting
from the right of the list shown by ddiirrss, starting with
--_n Rotates the stack so that the _nth directory (counting
from the right of the list shown by ddiirrss, starting with
zero) is at the top.
_d_i_r Adds _d_i_r to the directory stack at the top, making it the
new current working directory as if it had been supplied
new current working directory as if it had been supplied
as the argument to the ccdd builtin.
If the ppuusshhdd command is successful, a ddiirrss is performed as well.
If the first form is used, ppuusshhdd returns 0 unless the cd to _d_i_r
fails. With the second form, ppuusshhdd returns 0 unless the direc-
tory stack is empty, a non-existent directory stack element is
specified, or the directory change to the specified new current
If the first form is used, ppuusshhdd returns 0 unless the cd to _d_i_r
fails. With the second form, ppuusshhdd returns 0 unless the direc-
tory stack is empty, a non-existent directory stack element is
specified, or the directory change to the specified new current
directory fails.
ppwwdd [--LLPP]
Print the absolute pathname of the current working directory.
Print the absolute pathname of the current working directory.
The pathname printed contains no symbolic links if the --PP option
is supplied or the --oo pphhyyssiiccaall option to the sseett builtin command
is enabled. If the --LL option is used, the pathname printed may
contain symbolic links. The return status is 0 unless an error
occurs while reading the name of the current directory or an
is enabled. If the --LL option is used, the pathname printed may
contain symbolic links. The return status is 0 unless an error
occurs while reading the name of the current directory or an
invalid option is supplied.
rreeaadd [--eerrss] [--aa _a_n_a_m_e] [--dd _d_e_l_i_m] [--ii _t_e_x_t] [--nn _n_c_h_a_r_s] [--NN _n_c_h_a_r_s] [--pp
_p_r_o_m_p_t] [--tt _t_i_m_e_o_u_t] [--uu _f_d] [_n_a_m_e ...]
One line is read from the standard input, or from the file
descriptor _f_d supplied as an argument to the --uu option, and the
One line is read from the standard input, or from the file
descriptor _f_d supplied as an argument to the --uu option, and the
first word is assigned to the first _n_a_m_e, the second word to the
second _n_a_m_e, and so on, with leftover words and their interven-
ing separators assigned to the last _n_a_m_e. If there are fewer
second _n_a_m_e, and so on, with leftover words and their interven-
ing separators assigned to the last _n_a_m_e. If there are fewer
words read from the input stream than names, the remaining names
are assigned empty values. The characters in IIFFSS are used to
split the line into words using the same rules the shell uses
are assigned empty values. The characters in IIFFSS are used to
split the line into words using the same rules the shell uses
for expansion (described above under WWoorrdd SSpplliittttiinngg). The back-
slash character (\\) may be used to remove any special meaning
slash character (\\) may be used to remove any special meaning
for the next character read and for line continuation. Options,
if supplied, have the following meanings:
--aa _a_n_a_m_e
@@ -4901,27 +4904,30 @@ SSHHEELLLL BBUUIILLTTIINN CCOOMMMMAANNDDSS
new values are assigned. Other _n_a_m_e arguments are
ignored.
--dd _d_e_l_i_m
The first character of _d_e_l_i_m is used to terminate the
The first character of _d_e_l_i_m is used to terminate the
input line, rather than newline.
--ee If the standard input is coming from a terminal, rreeaaddlliinnee
(see RREEAADDLLIINNEE above) is used to obtain the line. Read-
line uses the current (or default, if line editing was
(see RREEAADDLLIINNEE above) is used to obtain the line. Read-
line uses the current (or default, if line editing was
not previously active) editing settings.
--ii _t_e_x_t
If rreeaaddlliinnee is being used to read the line, _t_e_x_t is
If rreeaaddlliinnee is being used to read the line, _t_e_x_t is
placed into the editing buffer before editing begins.
--nn _n_c_h_a_r_s
rreeaadd returns after reading _n_c_h_a_r_s characters rather than
rreeaadd returns after reading _n_c_h_a_r_s characters rather than
waiting for a complete line of input, but honors a delim-
iter if fewer than _n_c_h_a_r_s characters are read before the
iter if fewer than _n_c_h_a_r_s characters are read before the
delimiter.
--NN _n_c_h_a_r_s
rreeaadd returns after reading exactly _n_c_h_a_r_s characters
rather than waiting for a complete line of input, unless
EOF is encountered or rreeaadd times out. Delimiter charac-
ters encountered in the input are not treated specially
and do not cause rreeaadd to return until _n_c_h_a_r_s characters
are read.
rreeaadd returns after reading exactly _n_c_h_a_r_s characters
rather than waiting for a complete line of input, unless
EOF is encountered or rreeaadd times out. Delimiter charac-
ters encountered in the input are not treated specially
and do not cause rreeaadd to return until _n_c_h_a_r_s characters
are read. The result is not split on the characters in
IIFFSS; the intent is that the variable is assigned exactly
the characters read (with the exception of backslash; see
the --rr option below).
--pp _p_r_o_m_p_t
Display _p_r_o_m_p_t on standard error, without a trailing new-
line, before attempting to read any input. The prompt is
@@ -5826,4 +5832,4 @@ BBUUGGSS
GNU Bash 4.4 2015 January 19 BASH(1)
GNU Bash 4.4 2015 April 6 BASH(1)