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Chet Ramey
2011-12-03 13:43:49 -05:00
parent 2206f89ab4
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doc/bashref.html
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@@ -1,6 +1,6 @@
<HTML>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<!-- Created on February, 14 2005 by texi2html 1.64 -->
<!-- Created on February, 22 2005 by texi2html 1.64 -->
<!--
Written by: Lionel Cons <Lionel.Cons@cern.ch> (original author)
Karl Berry <karl@freefriends.org>
@@ -33,10 +33,10 @@ Send bugs and suggestions to <texi2html@mathematik.uni-kl.de>
<H1>Bash Reference Manual</H1></P><P>
This text is a brief description of the features that are present in
the Bash shell (version 3.1-devel, 11 February 2005)..
the Bash shell (version 3.1-devel, 19 February 2005)..
</P><P>
This is Edition 3.1-devel, last updated 11 February 2005,
This is Edition 3.1-devel, last updated 19 February 2005,
of <CITE>The GNU Bash Reference Manual</CITE>,
for <CODE>Bash</CODE>, Version 3.1-devel.
</P><P>
@@ -1266,6 +1266,10 @@ The syntax of the <CODE>case</CODE> command is:
<CODE>case</CODE> will selectively execute the <VAR>command-list</VAR> corresponding to
the first <VAR>pattern</VAR> that matches <VAR>word</VAR>.
If the shell option <CODE>nocasematch</CODE>
(see the description of <CODE>shopt</CODE> in <A HREF="bashref.html#SEC58">4.2 Bash Builtin Commands</A>)
is enabled, the match is performed without regard to the case
of alphabetic characters.
The <SAMP>`|'</SAMP> is used to separate multiple patterns, and the <SAMP>`)'</SAMP>
operator terminates a pattern list.
A list of patterns and an associated command-list is known
@@ -1376,6 +1380,10 @@ as primaries.
When the <SAMP>`=='</SAMP> and <SAMP>`!='</SAMP> operators are used, the string to the
right of the operator is considered a pattern and matched according
to the rules described below in <A HREF="bashref.html#SEC36">3.5.8.1 Pattern Matching</A>.
If the shell option <CODE>nocasematch</CODE>
(see the description of <CODE>shopt</CODE> in <A HREF="bashref.html#SEC58">4.2 Bash Builtin Commands</A>)
is enabled, the match is performed without regard to the case
of alphabetic characters.
The return value is 0 if the string matches or does not match
the pattern, respectively, and 1 otherwise.
Any part of the pattern may be quoted to force it to be matched as a
@@ -1390,7 +1398,7 @@ The return value is 0 if the string matches
the pattern, and 1 otherwise.
If the regular expression is syntactically incorrect, the conditional
expression's return value is 2.
If the shell option <CODE>nocaseglob</CODE>
If the shell option <CODE>nocasematch</CODE>
(see the description of <CODE>shopt</CODE> in <A HREF="bashref.html#SEC58">4.2 Bash Builtin Commands</A>)
is enabled, the match is performed without regard to the case
of alphabetic characters.
@@ -4792,6 +4800,23 @@ If the command run by the <CODE>DEBUG</CODE> trap returns a value of 2, and the
shell is executing in a subroutine (a shell function or a shell script
executed by the <CODE>.</CODE> or <CODE>source</CODE> builtins), a call to
<CODE>return</CODE> is simulated.
<P>
<LI>
<CODE>BASH_ARGC</CODE> and <CODE>BASH_ARGV</CODE> are updated as described in their
descriptions (see section <A HREF="bashref.html#SEC63">5.2 Bash Variables</A>).
<P>
<LI>
Function tracing is enabled: command substitution, shell functions, and
subshells invoked with <CODE>( <VAR>command</VAR> )</CODE> inherit the
<CODE>DEBUG</CODE> and <CODE>RETURN</CODE> traps.
<P>
<LI>
Error tracing is enabled: command substitution, shell functions, and
subshells invoked with <CODE>( <VAR>command</VAR> )</CODE> inherit the
<CODE>ERROR</CODE> trap.
</OL>
<P>
@@ -4891,6 +4916,12 @@ on an empty line.
performing filename expansion.
<P>
<DT><CODE>nocasematch</CODE>
<DD>If set, Bash matches patterns in a case-insensitive fashion when
performing matching while executing <CODE>case</CODE> or <CODE>[[</CODE>
conditional commands.
<P>
<DT><CODE>nullglob</CODE>
<DD>If set, Bash allows filename patterns which match no
files to expand to a null string, rather than themselves.
@@ -5650,6 +5681,10 @@ parameters to the current subroutine (shell function or script executed
with <CODE>.</CODE> or <CODE>source</CODE>) is at the top of the stack. When a
subroutine is executed, the number of parameters passed is pushed onto
<CODE>BASH_ARGC</CODE>.
The shell sets <CODE>BASH_ARGC</CODE> only when in extended debugging mode
(see <A HREF="bashref.html#SEC58">4.2 Bash Builtin Commands</A>
for a description of the <CODE>extdebug</CODE> option to the <CODE>shopt</CODE>
builtin).
<P>
<A NAME="IDX134"></A>
@@ -5660,6 +5695,10 @@ execution call stack. The final parameter of the last subroutine call
is at the top of the stack; the first parameter of the initial call is
at the bottom. When a subroutine is executed, the parameters supplied
are pushed onto <CODE>BASH_ARGV</CODE>.
The shell sets <CODE>BASH_ARGV</CODE> only when in extended debugging mode
(see <A HREF="bashref.html#SEC58">4.2 Bash Builtin Commands</A>
for a description of the <CODE>extdebug</CODE> option to the <CODE>shopt</CODE>
builtin).
<P>
<A NAME="IDX136"></A>
@@ -8035,6 +8074,11 @@ does not refer to an existing directory, <CODE>cd</CODE> will fail instead of
falling back to <VAR>physical</VAR> mode.
<P>
<LI>
When the <CODE>pwd</CODE> builtin is supplied the <SAMP>`-P'</SAMP> option, it resets
<CODE>$PWD</CODE> to a pathname containing no symlinks.
<P>
<LI>
When listing the history, the <CODE>fc</CODE> builtin does not include an
indication of whether or not a history entry has been modified.
@@ -15125,7 +15169,7 @@ to permit their use in free software.
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="bashref.html#SEC_About"> ? </A>]</TD>
</TR></TABLE>
<H1>About this document</H1>
This document was generated by <I>Chet Ramey</I> on <I>February, 14 2005</I>
This document was generated by <I>Chet Ramey</I> on <I>February, 22 2005</I>
using <A HREF="http://www.mathematik.uni-kl.de/~obachman/Texi2html
"><I>texi2html</I></A>
<P></P>
@@ -15287,7 +15331,7 @@ the following structure:
<BR>
<FONT SIZE="-1">
This document was generated
by <I>Chet Ramey</I> on <I>February, 14 2005</I>
by <I>Chet Ramey</I> on <I>February, 22 2005</I>
using <A HREF="http://www.mathematik.uni-kl.de/~obachman/Texi2html
"><I>texi2html</I></A>