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Chet Ramey
2011-12-03 12:57:50 -05:00
parent f085a21f5f
commit 61deeb1329
28 changed files with 1683 additions and 1377 deletions
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doc/bashref.texi
+15 -9
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@@ -16,7 +16,7 @@ This is Edition @value{EDITION}, last updated @value{UPDATED},
of @cite{The GNU Bash Reference Manual},
for @code{Bash}, Version @value{VERSION}.
Copyright @copyright{} 1988-2003 Free Software Foundation, Inc.
Copyright @copyright{} 1988-2004 Free Software Foundation, Inc.
Permission is granted to make and distribute verbatim copies of
this manual provided the copyright notice and this permission notice
@@ -2973,9 +2973,10 @@ The return status is zero.
trap [-lp] [@var{arg}] [@var{sigspec} @dots{}]
@end example
The commands in @var{arg} are to be read and executed when the
shell receives signal @var{sigspec}. If @var{arg} is absent or
equal to @samp{-}, all specified signals are reset to the values
they had when the shell was started.
shell receives signal @var{sigspec}. If @var{arg} is absent (and
there is a single @var{sigspec}) or
equal to @samp{-}, each specified signal's disposition is reset
to the value it had when the shell was started.
If @var{arg} is the null string, then the signal specified by
each @var{sigspec} is ignored by the shell and commands it invokes.
If @var{arg} is not present and @option{-p} has been supplied,
@@ -2986,9 +2987,8 @@ associated with each signal number in a form that may be reused as
shell input.
The @option{-l} option causes the shell to print a list of signal names
and their corresponding numbers.
Each @var{sigspec} is either a signal name such as @code{SIGINT} (with
or without the @code{SIG} prefix) or a signal number.
Each @var{sigspec} is either a signal name or a signal number.
Signal names are case insensitive and the @code{SIG} prefix is optional.
If a @var{sigspec}
is @code{0} or @code{EXIT}, @var{arg} is executed when the shell exits.
If a @var{sigspec} is @code{DEBUG}, the command @var{arg} is executed
@@ -4653,6 +4653,11 @@ the count to the value assigned, and the expanded value
becomes the value assigned plus the number of seconds
since the assignment.
@item SHELL
The full pathname to the shell is kept in this environment variable.
If it is not set when the shell starts,
Bash assigns to it the full pathname of the current user's login shell.
@item SHELLOPTS
A colon-separated list of enabled shell options. Each word in
the list is a valid argument for the @option{-o} option to the
@@ -6194,8 +6199,9 @@ kill -l [@var{exit_status}]
@end example
Send a signal specified by @var{sigspec} or @var{signum} to the process
named by job specification @var{jobspec} or process @sc{id} @var{pid}.
@var{sigspec} is either a signal name such as @code{SIGINT} (with or without
the @code{SIG} prefix) or a signal number; @var{signum} is a signal number.
@var{sigspec} is either a case-insensitive signal name such as
@code{SIGINT} (with or without the @code{SIG} prefix)
or a signal number; @var{signum} is a signal number.
If @var{sigspec} and @var{signum} are not present, @code{SIGTERM} is used.
The @option{-l} option lists the signal names.
If any arguments are supplied when @option{-l} is given, the names of the