mirror of
https://https.git.savannah.gnu.org/git/bash.git
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Chet Ramey
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|
||||
</HEAD>
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||||
<BODY><TABLE WIDTH=100%>
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||||
<TR>
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||||
<TH ALIGN=LEFT width=33%>BASH(1)<TH ALIGN=CENTER width=33%>2012 July 5<TH ALIGN=RIGHT width=33%>BASH(1)
|
||||
<TH ALIGN=LEFT width=33%>BASH(1)<TH ALIGN=CENTER width=33%>2012 July 14<TH ALIGN=RIGHT width=33%>BASH(1)
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||||
</TR>
|
||||
</TABLE>
|
||||
<BR><A HREF="#index">Index</A>
|
||||
@@ -11085,6 +11085,12 @@ separately (see
|
||||
</FONT>
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||||
above), and may cause
|
||||
subshells to exit before executing all the commands in the subshell.
|
||||
If a shell function executes in a context where <B>-e</B> is being ignored,
|
||||
even if <B>-e</B> is set, none of the commands executed within the function
|
||||
body will be affected by the <B>-e</B> setting.
|
||||
If a shell function sets <B>-e</B> while executing in a context where
|
||||
<B>-e</B> is ignored, that setting will not have any effect until the
|
||||
command containing the function call completes.
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||||
<DT><B>-f</B>
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||||
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||||
<DD>
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||||
@@ -13005,7 +13011,7 @@ There may be only one active coprocess at a time.
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<HR>
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||||
<TABLE WIDTH=100%>
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||||
<TR>
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||||
<TH ALIGN=LEFT width=33%>GNU Bash 4.2<TH ALIGN=CENTER width=33%>2012 July 5<TH ALIGN=RIGHT width=33%>BASH(1)
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||||
<TH ALIGN=LEFT width=33%>GNU Bash 4.2<TH ALIGN=CENTER width=33%>2012 July 14<TH ALIGN=RIGHT width=33%>BASH(1)
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||||
</TR>
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||||
</TABLE>
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||||
<HR>
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||||
@@ -13111,6 +13117,6 @@ There may be only one active coprocess at a time.
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||||
</DL>
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||||
<HR>
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||||
This document was created by man2html from bash.1.<BR>
|
||||
Time: 05 July 2012 20:43:10 EDT
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Time: 16 July 2012 16:12:38 EDT
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</BODY>
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</HTML>
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<HTML>
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<!-- Created on July, 5 2012 by texi2html 1.64 -->
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<!-- Created on July, 16 2012 by texi2html 1.64 -->
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||||
<!--
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||||
Written by: Lionel Cons <Lionel.Cons@cern.ch> (original author)
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||||
Karl Berry <karl@freefriends.org>
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@@ -33,10 +33,10 @@ Send bugs and suggestions to <texi2html@mathematik.uni-kl.de>
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<H1>Bash Reference Manual</H1></P><P>
|
||||
|
||||
This text is a brief description of the features that are present in
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the Bash shell (version 4.2, 5 July 2012).
|
||||
the Bash shell (version 4.2, 14 July 2012).
|
||||
</P><P>
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||||
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||||
This is Edition 4.2, last updated 5 July 2012,
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||||
This is Edition 4.2, last updated 14 July 2012,
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||||
of <CITE>The GNU Bash Reference Manual</CITE>,
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for <CODE>Bash</CODE>, Version 4.2.
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</P><P>
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@@ -5762,6 +5762,14 @@ separately (see section <A HREF="bashref.html#SEC54">3.7.3 Command Execution Env
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subshells to exit before executing all the commands in the subshell.
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</P><P>
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If a shell function executes in a context where <SAMP>`-e'</SAMP> is being ignored,
|
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even if <SAMP>`-e'</SAMP> is set, none of the commands executed within the function
|
||||
body will be affected by the <SAMP>`-e'</SAMP> setting.
|
||||
If a shell function sets <SAMP>`-e'</SAMP> while executing in a context where
|
||||
<SAMP>`-e'</SAMP> is ignored, that setting will not have any effect until the
|
||||
command containing the function call completes.
|
||||
</P><P>
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||||
<DT><CODE>-f</CODE>
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<DD>Disable filename expansion (globbing).
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<P>
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||||
@@ -17081,7 +17089,7 @@ to permit their use in free software.
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="bashref.html#SEC_About"> ? </A>]</TD>
|
||||
</TR></TABLE>
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||||
<H1>About this document</H1>
|
||||
This document was generated by <I>Chet Ramey</I> on <I>July, 5 2012</I>
|
||||
This document was generated by <I>Chet Ramey</I> on <I>July, 16 2012</I>
|
||||
using <A HREF="http://www.mathematik.uni-kl.de/~obachman/Texi2html
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"><I>texi2html</I></A>
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<P></P>
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@@ -17243,7 +17251,7 @@ the following structure:
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<BR>
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<FONT SIZE="-1">
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||||
This document was generated
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||||
by <I>Chet Ramey</I> on <I>July, 5 2012</I>
|
||||
by <I>Chet Ramey</I> on <I>July, 16 2012</I>
|
||||
using <A HREF="http://www.mathematik.uni-kl.de/~obachman/Texi2html
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||||
"><I>texi2html</I></A>
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+140
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/usr/homes/chet/src/bash/src/doc/bashref.texi.
|
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|
||||
This text is a brief description of the features that are present in
|
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the Bash shell (version 4.2, 5 July 2012).
|
||||
the Bash shell (version 4.2, 14 July 2012).
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||||
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||||
This is Edition 4.2, last updated 5 July 2012, of `The GNU Bash
|
||||
This is Edition 4.2, last updated 14 July 2012, of `The GNU Bash
|
||||
Reference Manual', for `Bash', Version 4.2.
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||||
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||||
Copyright (C) 1988-2012 Free Software Foundation, Inc.
|
||||
@@ -33,9 +33,9 @@ Bash Features
|
||||
*************
|
||||
|
||||
This text is a brief description of the features that are present in
|
||||
the Bash shell (version 4.2, 5 July 2012).
|
||||
the Bash shell (version 4.2, 14 July 2012).
|
||||
|
||||
This is Edition 4.2, last updated 5 July 2012, of `The GNU Bash
|
||||
This is Edition 4.2, last updated 14 July 2012, of `The GNU Bash
|
||||
Reference Manual', for `Bash', Version 4.2.
|
||||
|
||||
Bash contains features that appear in other popular shells, and some
|
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@@ -3903,6 +3903,13 @@ parameters, or to display the names and values of shell variables.
|
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Environment::), and may cause subshells to exit before
|
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executing all the commands in the subshell.
|
||||
|
||||
If a shell function executes in a context where `-e' is being
|
||||
ignored, even if `-e' is set, none of the commands executed
|
||||
within the function body will be affected by the `-e' setting.
|
||||
If a shell function sets `-e' while executing in a context
|
||||
where `-e' is ignored, that setting will not have any effect
|
||||
until the command containing the function call completes.
|
||||
|
||||
`-f'
|
||||
Disable filename expansion (globbing).
|
||||
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||||
@@ -11000,134 +11007,134 @@ D.5 Concept Index
|
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Tag Table:
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Node: Top1089
|
||||
Node: Introduction2939
|
||||
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|
||||
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|
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|
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|
||||
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|
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|
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|
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||||
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|
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||||
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||||
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|
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||||
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||||
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||||
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||||
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|
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||||
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|
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||||
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|
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||||
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||||
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|
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||||
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|
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||||
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|
||||
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|
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|
||||
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|
||||
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||||
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||||
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|
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||||
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||||
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|
||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
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||||
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|
||||
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|
||||
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||||
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||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
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||||
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||||
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|
||||
Node: Command Grouping39536
|
||||
Node: Coprocesses41015
|
||||
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|
||||
Node: Shell Functions45211
|
||||
Node: Shell Parameters50295
|
||||
Node: Positional Parameters54424
|
||||
Node: Special Parameters55324
|
||||
Node: Shell Expansions58288
|
||||
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|
||||
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||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
Node: Filename Expansion82177
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
Node: Simple Command Expansion98171
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
Node: Modifying Shell Behavior161841
|
||||
Node: The Set Builtin162186
|
||||
Node: The Shopt Builtin172358
|
||||
Node: Special Builtins186409
|
||||
Node: Shell Variables187388
|
||||
Node: Bourne Shell Variables187828
|
||||
Node: Bash Variables189859
|
||||
Node: Bash Features215369
|
||||
Node: Invoking Bash216268
|
||||
Node: Bash Startup Files222046
|
||||
Node: Interactive Shells227065
|
||||
Node: What is an Interactive Shell?227475
|
||||
Node: Is this Shell Interactive?228124
|
||||
Node: Interactive Shell Behavior228939
|
||||
Node: Bash Conditional Expressions232227
|
||||
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|
||||
Node: Aliases238791
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
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||||
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||||
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|
||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
Node: A Programmable Completion Example351006
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
Node: Event Designators366572
|
||||
Node: Word Designators367794
|
||||
Node: Modifiers369433
|
||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
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||||
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||||
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||||
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||||
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||||
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||||
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|
||||
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|
||||
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|
||||
|
||||
End Tag Table
|
||||
|
||||
+11
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@@ -1,4 +1,4 @@
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This is TeX, Version 3.1415926 (TeX Live 2011/Fink) (format=tex 2012.4.18) 5 JUL 2012 20:43
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This is TeX, Version 3.1415926 (TeX Live 2011/Fink) (format=tex 2012.4.18) 16 JUL 2012 16:12
|
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**/usr/homes/chet/src/bash/src/doc/bashref.texi
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[48] [49] [50] [51] [52] [53] [54] [55] [56] [57] [58] [59] [60] [61] [62]
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[65] [66] Chapter 5 [67] [68] [69] [70] [71] [72] [73] [74] [75] [76] [77]
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[65] [66] [67] Chapter 5 [68] [69] [70] [71] [72] [73] [74] [75] [76] [77]
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Chapter 6 [78]
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[]@texttt bash [long-opt] [-ir] [-abefhkmnptuvxdBCDHP] [-o @textttsl op-tion@t
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exttt ] [-O @textttsl shopt_option@texttt ] [@textttsl ar-
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||||
|
||||
@@ -272,7 +272,7 @@ exttt ] [-O @textttsl shopt_option@texttt ] [@textttsl ar-
|
||||
.etc.
|
||||
|
||||
|
||||
Overfull \hbox (76.23077pt too wide) in paragraph at lines 5885--5885
|
||||
Overfull \hbox (76.23077pt too wide) in paragraph at lines 5892--5892
|
||||
[]@texttt bash [long-opt] [-abefhkmnptuvxdBCDHP] [-o @textttsl op-tion@texttt
|
||||
] [-O @textttsl shopt_option@texttt ] -c @textttsl string @texttt [@textttsl ar
|
||||
-
|
||||
@@ -286,7 +286,7 @@ Overfull \hbox (76.23077pt too wide) in paragraph at lines 5885--5885
|
||||
.etc.
|
||||
|
||||
|
||||
Overfull \hbox (34.72258pt too wide) in paragraph at lines 5886--5886
|
||||
Overfull \hbox (34.72258pt too wide) in paragraph at lines 5893--5893
|
||||
[]@texttt bash [long-opt] -s [-abefhkmnptuvxdBCDHP] [-o @textttsl op-tion@text
|
||||
tt ] [-O @textttsl shopt_option@texttt ] [@textttsl ar-
|
||||
|
||||
@@ -299,7 +299,7 @@ tt ] [-O @textttsl shopt_option@texttt ] [@textttsl ar-
|
||||
.etc.
|
||||
|
||||
[79] [80]
|
||||
Underfull \hbox (badness 2245) in paragraph at lines 6058--6060
|
||||
Underfull \hbox (badness 2245) in paragraph at lines 6065--6067
|
||||
[]@textrm When a lo-gin shell ex-its, Bash reads and ex-e-cutes com-mands from
|
||||
the file
|
||||
|
||||
@@ -312,7 +312,7 @@ the file
|
||||
.etc.
|
||||
|
||||
[81] [82] [83] [84] [85] [86] [87] [88] [89] [90] [91] [92] [93] [94]
|
||||
Underfull \hbox (badness 2521) in paragraph at lines 7256--7259
|
||||
Underfull \hbox (badness 2521) in paragraph at lines 7263--7266
|
||||
@textrm `@texttt --enable-strict-posix-default[]@textrm '[] to @texttt configur
|
||||
e[] @textrm when build-ing (see Sec-tion 10.8
|
||||
|
||||
@@ -393,7 +393,7 @@ athname[]
|
||||
|
||||
[131]) (/usr/homes/chet/src/bash/src/lib/readline/doc/hsuser.texi Chapter 9
|
||||
[132] [133] [134] [135] [136]) Chapter 10 [137] [138] [139] [140] [141]
|
||||
Underfull \hbox (badness 2772) in paragraph at lines 7862--7866
|
||||
Underfull \hbox (badness 2772) in paragraph at lines 7869--7873
|
||||
[]@textrm Enable sup-port for large files (@texttt http://www.sas.com/standard
|
||||
s/large_
|
||||
|
||||
@@ -413,10 +413,10 @@ s/large_
|
||||
Here is how much of TeX's memory you used:
|
||||
2085 strings out of 497974
|
||||
28645 string characters out of 3220833
|
||||
65554 words of memory out of 3000000
|
||||
65556 words of memory out of 3000000
|
||||
2901 multiletter control sequences out of 15000+200000
|
||||
32127 words of font info for 112 fonts, out of 3000000 for 9000
|
||||
51 hyphenation exceptions out of 8191
|
||||
16i,6n,14p,319b,705s stack positions out of 5000i,500n,10000p,200000b,50000s
|
||||
|
||||
Output written on bashref.dvi (176 pages, 708852 bytes).
|
||||
Output written on bashref.dvi (176 pages, 709392 bytes).
|
||||
|
||||
Binary file not shown.
+446
-434
File diff suppressed because it is too large
Load Diff
+291
-284
@@ -1053,21 +1053,28 @@ BBAASSHH BBUUIILLTTIINN CCOOMMMMAANNDDSS
|
||||
applies to the shell environment and each subshell envi-
|
||||
ronment separately (see CCOOMMMMAANNDD EEXXEECCUUTTIIOONN EENNVVIIRROONNMMEENNTT
|
||||
above), and may cause subshells to exit before executing
|
||||
all the commands in the subshell.
|
||||
all the commands in the subshell. If a shell function
|
||||
executes in a context where --ee is being ignored, even if
|
||||
--ee is set, none of the commands executed within the
|
||||
function body will be affected by the --ee setting. If a
|
||||
shell function sets --ee while executing in a context
|
||||
where --ee is ignored, that setting will not have any
|
||||
effect until the command containing the function call
|
||||
completes.
|
||||
--ff Disable pathname expansion.
|
||||
--hh Remember the location of commands as they are looked up
|
||||
--hh Remember the location of commands as they are looked up
|
||||
for execution. This is enabled by default.
|
||||
--kk All arguments in the form of assignment statements are
|
||||
placed in the environment for a command, not just those
|
||||
--kk All arguments in the form of assignment statements are
|
||||
placed in the environment for a command, not just those
|
||||
that precede the command name.
|
||||
--mm Monitor mode. Job control is enabled. This option is
|
||||
on by default for interactive shells on systems that
|
||||
support it (see JJOOBB CCOONNTTRROOLL above). All processes run
|
||||
--mm Monitor mode. Job control is enabled. This option is
|
||||
on by default for interactive shells on systems that
|
||||
support it (see JJOOBB CCOONNTTRROOLL above). All processes run
|
||||
in a separate process group. When a background job com-
|
||||
pletes, the shell prints a line containing its exit sta-
|
||||
tus.
|
||||
--nn Read commands but do not execute them. This may be used
|
||||
to check a shell script for syntax errors. This is
|
||||
to check a shell script for syntax errors. This is
|
||||
ignored by interactive shells.
|
||||
--oo _o_p_t_i_o_n_-_n_a_m_e
|
||||
The _o_p_t_i_o_n_-_n_a_m_e can be one of the following:
|
||||
@@ -1075,10 +1082,10 @@ BBAASSHH BBUUIILLTTIINN CCOOMMMMAANNDDSS
|
||||
Same as --aa.
|
||||
bbrraacceeeexxppaanndd
|
||||
Same as --BB.
|
||||
eemmaaccss Use an emacs-style command line editing inter-
|
||||
eemmaaccss Use an emacs-style command line editing inter-
|
||||
face. This is enabled by default when the shell
|
||||
is interactive, unless the shell is started with
|
||||
the ----nnooeeddiittiinngg option. This also affects the
|
||||
the ----nnooeeddiittiinngg option. This also affects the
|
||||
editing interface used for rreeaadd --ee.
|
||||
eerrrreexxiitt Same as --ee.
|
||||
eerrrrttrraaccee
|
||||
@@ -1092,8 +1099,8 @@ BBAASSHH BBUUIILLTTIINN CCOOMMMMAANNDDSS
|
||||
HHIISSTTOORRYY. This option is on by default in inter-
|
||||
active shells.
|
||||
iiggnnoorreeeeooff
|
||||
The effect is as if the shell command
|
||||
``IGNOREEOF=10'' had been executed (see SShheellll
|
||||
The effect is as if the shell command
|
||||
``IGNOREEOF=10'' had been executed (see SShheellll
|
||||
VVaarriiaabblleess above).
|
||||
kkeeyywwoorrdd Same as --kk.
|
||||
mmoonniittoorr Same as --mm.
|
||||
@@ -1108,335 +1115,335 @@ BBAASSHH BBUUIILLTTIINN CCOOMMMMAANNDDSS
|
||||
pphhyyssiiccaall
|
||||
Same as --PP.
|
||||
ppiippeeffaaiill
|
||||
If set, the return value of a pipeline is the
|
||||
value of the last (rightmost) command to exit
|
||||
with a non-zero status, or zero if all commands
|
||||
in the pipeline exit successfully. This option
|
||||
If set, the return value of a pipeline is the
|
||||
value of the last (rightmost) command to exit
|
||||
with a non-zero status, or zero if all commands
|
||||
in the pipeline exit successfully. This option
|
||||
is disabled by default.
|
||||
ppoossiixx Change the behavior of bbaasshh where the default
|
||||
operation differs from the POSIX standard to
|
||||
ppoossiixx Change the behavior of bbaasshh where the default
|
||||
operation differs from the POSIX standard to
|
||||
match the standard (_p_o_s_i_x _m_o_d_e).
|
||||
pprriivviilleeggeedd
|
||||
Same as --pp.
|
||||
vveerrbboossee Same as --vv.
|
||||
vvii Use a vi-style command line editing interface.
|
||||
vvii Use a vi-style command line editing interface.
|
||||
This also affects the editing interface used for
|
||||
rreeaadd --ee.
|
||||
xxttrraaccee Same as --xx.
|
||||
If --oo is supplied with no _o_p_t_i_o_n_-_n_a_m_e, the values of the
|
||||
current options are printed. If ++oo is supplied with no
|
||||
_o_p_t_i_o_n_-_n_a_m_e, a series of sseett commands to recreate the
|
||||
current option settings is displayed on the standard
|
||||
current options are printed. If ++oo is supplied with no
|
||||
_o_p_t_i_o_n_-_n_a_m_e, a series of sseett commands to recreate the
|
||||
current option settings is displayed on the standard
|
||||
output.
|
||||
--pp Turn on _p_r_i_v_i_l_e_g_e_d mode. In this mode, the $$EENNVV and
|
||||
$$BBAASSHH__EENNVV files are not processed, shell functions are
|
||||
not inherited from the environment, and the SSHHEELLLLOOPPTTSS,
|
||||
BBAASSHHOOPPTTSS, CCDDPPAATTHH, and GGLLOOBBIIGGNNOORREE variables, if they
|
||||
--pp Turn on _p_r_i_v_i_l_e_g_e_d mode. In this mode, the $$EENNVV and
|
||||
$$BBAASSHH__EENNVV files are not processed, shell functions are
|
||||
not inherited from the environment, and the SSHHEELLLLOOPPTTSS,
|
||||
BBAASSHHOOPPTTSS, CCDDPPAATTHH, and GGLLOOBBIIGGNNOORREE variables, if they
|
||||
appear in the environment, are ignored. If the shell is
|
||||
started with the effective user (group) id not equal to
|
||||
the real user (group) id, and the --pp option is not sup-
|
||||
started with the effective user (group) id not equal to
|
||||
the real user (group) id, and the --pp option is not sup-
|
||||
plied, these actions are taken and the effective user id
|
||||
is set to the real user id. If the --pp option is sup-
|
||||
plied at startup, the effective user id is not reset.
|
||||
Turning this option off causes the effective user and
|
||||
is set to the real user id. If the --pp option is sup-
|
||||
plied at startup, the effective user id is not reset.
|
||||
Turning this option off causes the effective user and
|
||||
group ids to be set to the real user and group ids.
|
||||
--tt Exit after reading and executing one command.
|
||||
--uu Treat unset variables and parameters other than the spe-
|
||||
cial parameters "@" and "*" as an error when performing
|
||||
parameter expansion. If expansion is attempted on an
|
||||
unset variable or parameter, the shell prints an error
|
||||
message, and, if not interactive, exits with a non-zero
|
||||
cial parameters "@" and "*" as an error when performing
|
||||
parameter expansion. If expansion is attempted on an
|
||||
unset variable or parameter, the shell prints an error
|
||||
message, and, if not interactive, exits with a non-zero
|
||||
status.
|
||||
--vv Print shell input lines as they are read.
|
||||
--xx After expanding each _s_i_m_p_l_e _c_o_m_m_a_n_d, ffoorr command, ccaassee
|
||||
--xx After expanding each _s_i_m_p_l_e _c_o_m_m_a_n_d, ffoorr command, ccaassee
|
||||
command, sseelleecctt command, or arithmetic ffoorr command, dis-
|
||||
play the expanded value of PPSS44, followed by the command
|
||||
play the expanded value of PPSS44, followed by the command
|
||||
and its expanded arguments or associated word list.
|
||||
--BB The shell performs brace expansion (see BBrraaccee EExxppaannssiioonn
|
||||
--BB The shell performs brace expansion (see BBrraaccee EExxppaannssiioonn
|
||||
above). This is on by default.
|
||||
--CC If set, bbaasshh does not overwrite an existing file with
|
||||
the >>, >>&&, and <<>> redirection operators. This may be
|
||||
--CC If set, bbaasshh does not overwrite an existing file with
|
||||
the >>, >>&&, and <<>> redirection operators. This may be
|
||||
overridden when creating output files by using the redi-
|
||||
rection operator >>|| instead of >>.
|
||||
--EE If set, any trap on EERRRR is inherited by shell functions,
|
||||
command substitutions, and commands executed in a sub-
|
||||
shell environment. The EERRRR trap is normally not inher-
|
||||
command substitutions, and commands executed in a sub-
|
||||
shell environment. The EERRRR trap is normally not inher-
|
||||
ited in such cases.
|
||||
--HH Enable !! style history substitution. This option is on
|
||||
by default when the shell is interactive.
|
||||
--PP If set, the shell does not resolve symbolic links when
|
||||
executing commands such as ccdd that change the current
|
||||
--PP If set, the shell does not resolve symbolic links when
|
||||
executing commands such as ccdd that change the current
|
||||
working directory. It uses the physical directory
|
||||
structure instead. By default, bbaasshh follows the logical
|
||||
chain of directories when performing commands which
|
||||
chain of directories when performing commands which
|
||||
change the current directory.
|
||||
--TT If set, any traps on DDEEBBUUGG and RREETTUURRNN are inherited by
|
||||
shell functions, command substitutions, and commands
|
||||
executed in a subshell environment. The DDEEBBUUGG and
|
||||
--TT If set, any traps on DDEEBBUUGG and RREETTUURRNN are inherited by
|
||||
shell functions, command substitutions, and commands
|
||||
executed in a subshell environment. The DDEEBBUUGG and
|
||||
RREETTUURRNN traps are normally not inherited in such cases.
|
||||
---- If no arguments follow this option, then the positional
|
||||
---- If no arguments follow this option, then the positional
|
||||
parameters are unset. Otherwise, the positional parame-
|
||||
ters are set to the _a_r_gs, even if some of them begin
|
||||
ters are set to the _a_r_gs, even if some of them begin
|
||||
with a --.
|
||||
-- Signal the end of options, cause all remaining _a_r_gs to
|
||||
-- Signal the end of options, cause all remaining _a_r_gs to
|
||||
be assigned to the positional parameters. The --xx and --vv
|
||||
options are turned off. If there are no _a_r_gs, the posi-
|
||||
tional parameters remain unchanged.
|
||||
|
||||
The options are off by default unless otherwise noted. Using +
|
||||
rather than - causes these options to be turned off. The
|
||||
options can also be specified as arguments to an invocation of
|
||||
the shell. The current set of options may be found in $$--. The
|
||||
The options are off by default unless otherwise noted. Using +
|
||||
rather than - causes these options to be turned off. The
|
||||
options can also be specified as arguments to an invocation of
|
||||
the shell. The current set of options may be found in $$--. The
|
||||
return status is always true unless an invalid option is encoun-
|
||||
tered.
|
||||
|
||||
sshhiifftt [_n]
|
||||
The positional parameters from _n+1 ... are renamed to $$11 ........
|
||||
Parameters represented by the numbers $$## down to $$##-_n+1 are
|
||||
unset. _n must be a non-negative number less than or equal to
|
||||
$$##. If _n is 0, no parameters are changed. If _n is not given,
|
||||
it is assumed to be 1. If _n is greater than $$##, the positional
|
||||
parameters are not changed. The return status is greater than
|
||||
The positional parameters from _n+1 ... are renamed to $$11 ........
|
||||
Parameters represented by the numbers $$## down to $$##-_n+1 are
|
||||
unset. _n must be a non-negative number less than or equal to
|
||||
$$##. If _n is 0, no parameters are changed. If _n is not given,
|
||||
it is assumed to be 1. If _n is greater than $$##, the positional
|
||||
parameters are not changed. The return status is greater than
|
||||
zero if _n is greater than $$## or less than zero; otherwise 0.
|
||||
|
||||
sshhoopptt [--ppqqssuu] [--oo] [_o_p_t_n_a_m_e ...]
|
||||
Toggle the values of variables controlling optional shell behav-
|
||||
ior. With no options, or with the --pp option, a list of all set-
|
||||
table options is displayed, with an indication of whether or not
|
||||
each is set. The --pp option causes output to be displayed in a
|
||||
form that may be reused as input. Other options have the fol-
|
||||
each is set. The --pp option causes output to be displayed in a
|
||||
form that may be reused as input. Other options have the fol-
|
||||
lowing meanings:
|
||||
--ss Enable (set) each _o_p_t_n_a_m_e.
|
||||
--uu Disable (unset) each _o_p_t_n_a_m_e.
|
||||
--qq Suppresses normal output (quiet mode); the return status
|
||||
--qq Suppresses normal output (quiet mode); the return status
|
||||
indicates whether the _o_p_t_n_a_m_e is set or unset. If multi-
|
||||
ple _o_p_t_n_a_m_e arguments are given with --qq, the return sta-
|
||||
tus is zero if all _o_p_t_n_a_m_e_s are enabled; non-zero other-
|
||||
ple _o_p_t_n_a_m_e arguments are given with --qq, the return sta-
|
||||
tus is zero if all _o_p_t_n_a_m_e_s are enabled; non-zero other-
|
||||
wise.
|
||||
--oo Restricts the values of _o_p_t_n_a_m_e to be those defined for
|
||||
--oo Restricts the values of _o_p_t_n_a_m_e to be those defined for
|
||||
the --oo option to the sseett builtin.
|
||||
|
||||
If either --ss or --uu is used with no _o_p_t_n_a_m_e arguments, sshhoopptt
|
||||
shows only those options which are set or unset, respectively.
|
||||
Unless otherwise noted, the sshhoopptt options are disabled (unset)
|
||||
If either --ss or --uu is used with no _o_p_t_n_a_m_e arguments, sshhoopptt
|
||||
shows only those options which are set or unset, respectively.
|
||||
Unless otherwise noted, the sshhoopptt options are disabled (unset)
|
||||
by default.
|
||||
|
||||
The return status when listing options is zero if all _o_p_t_n_a_m_e_s
|
||||
are enabled, non-zero otherwise. When setting or unsetting
|
||||
options, the return status is zero unless an _o_p_t_n_a_m_e is not a
|
||||
The return status when listing options is zero if all _o_p_t_n_a_m_e_s
|
||||
are enabled, non-zero otherwise. When setting or unsetting
|
||||
options, the return status is zero unless an _o_p_t_n_a_m_e is not a
|
||||
valid shell option.
|
||||
|
||||
The list of sshhoopptt options is:
|
||||
|
||||
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-
|
||||
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 command
|
||||
and, if necessary, updates the values of LLIINNEESS and CCOOLL--
|
||||
If set, bbaasshh checks the window size after each command
|
||||
and, if necessary, updates the values of LLIINNEESS and CCOOLL--
|
||||
UUMMNNSS.
|
||||
ccmmddhhiisstt If set, bbaasshh attempts to save all lines of a multiple-
|
||||
line command in the same history entry. This allows
|
||||
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.
|
||||
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
|
||||
with respect to locale-specific string comparison when
|
||||
using the [[[[ conditional command's << and >> operators
|
||||
(see previous item).
|
||||
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 posix mode, 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 posix mode, 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.
|
||||
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.
|
||||
If set, bbaasshh replaces directory names with the results
|
||||
of word expansion when performing filename completion.
|
||||
This changes the contents of the readline editing
|
||||
buffer. If not set, bbaasshh attempts to preserve what the
|
||||
buffer. 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
|
||||
ddoottgglloobb If set, bbaasshh includes filenames beginning with a `.' in
|
||||
the results of pathname expansion.
|
||||
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, behavior intended for use by debuggers is
|
||||
If set, behavior 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), a call to
|
||||
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), a call to
|
||||
rreettuurrnn is simulated.
|
||||
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 (see
|
||||
PPaatttteerrnn MMaattcchhiinngg above) behave as if in the traditional
|
||||
If set, range expressions used in pattern matching (see
|
||||
PPaatttteerrnn MMaattcchhiinngg above) behave as if in the traditional
|
||||
C locale when performing comparisons. That is, the cur-
|
||||
rent locale's collating sequence is not taken into
|
||||
account, so bb will not collate between AA and BB, and
|
||||
upper-case and lower-case ASCII characters will collate
|
||||
rent locale's collating sequence is not taken into
|
||||
account, so bb will not collate 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.
|
||||
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.
|
||||
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.
|
||||
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--
|
||||
@@ -1444,50 +1451,50 @@ BBAASSHH BBUUIILLTTIINN CCOOMMMMAANNDDSS
|
||||
enabled by default.
|
||||
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.
|
||||
@@ -1504,63 +1511,63 @@ 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-
|
||||
@@ -1568,53 +1575,53 @@ BBAASSHH BBUUIILLTTIINN CCOOMMMMAANNDDSS
|
||||
|
||||
If a _s_i_g_s_p_e_c is EERRRR, the command _a_r_g is executed whenever a sim-
|
||||
ple command has a non-zero exit status, subject to 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, part of a
|
||||
command executed in a &&&& or |||| list, or if the command's return
|
||||
value is being inverted via !!. These are the same conditions
|
||||
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, part of a
|
||||
command executed in a &&&& or |||| list, or if the command's return
|
||||
value is being inverted via !!. These are the same conditions
|
||||
obeyed by the eerrrreexxiitt 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 [--HHSSTTaabbccddeeffiillmmnnppqqrrssttuuvvxx [_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:
|
||||
@@ -1623,11 +1630,11 @@ 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
|
||||
--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)
|
||||
@@ -1636,64 +1643,64 @@ 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
|
||||
--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; and --TT, --bb, --nn, and --uu, which are unscaled values. The
|
||||
return status is 0 unless an invalid option or argument is sup-
|
||||
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; and --TT, --bb, --nn, and --uu, which are unscaled values. The
|
||||
return status is 0 unless an invalid option or argument is sup-
|
||||
plied, 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-
|
||||
only.
|
||||
|
||||
wwaaiitt [_n _._._.]
|
||||
Wait for each specified process and return its termination sta-
|
||||
tus. Each _n 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 _n is not given, all currently active child pro-
|
||||
cesses are waited for, and the return status is zero. If _n
|
||||
specifies a non-existent process or job, the return status is
|
||||
127. Otherwise, the return status is the exit status of the
|
||||
Wait for each specified process and return its termination sta-
|
||||
tus. Each _n 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 _n is not given, all currently active child pro-
|
||||
cesses are waited for, and the return status is zero. If _n
|
||||
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
|
||||
|
||||
+478
-463
File diff suppressed because it is too large
Load Diff
+1
-1
@@ -1,6 +1,6 @@
|
||||
%!PS-Adobe-3.0
|
||||
%%Creator: groff version 1.19.2
|
||||
%%CreationDate: Thu Jul 5 20:43:03 2012
|
||||
%%CreationDate: Mon Jul 16 16:12:25 2012
|
||||
%%DocumentNeededResources: font Times-Roman
|
||||
%%+ font Times-Bold
|
||||
%%DocumentSuppliedResources: procset grops 1.19 2
|
||||
|
||||
Reference in New Issue
Block a user