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Changes to grep/manual/html_node/General-Output-Control.html,v
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From: |
Jim Meyering |
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Subject: |
Changes to grep/manual/html_node/General-Output-Control.html,v |
|
Date: |
Wed, 22 Mar 2023 22:55:26 -0400 (EDT) |
CVSROOT: /webcvs/grep
Module name: grep
Changes by: Jim Meyering <meyering> 23/03/22 22:55:22
Index: html_node/General-Output-Control.html
===================================================================
RCS file: /webcvs/grep/grep/manual/html_node/General-Output-Control.html,v
retrieving revision 1.33
retrieving revision 1.34
diff -u -b -r1.33 -r1.34
--- html_node/General-Output-Control.html 3 Sep 2022 19:33:14 -0000
1.33
+++ html_node/General-Output-Control.html 23 Mar 2023 02:55:21 -0000
1.34
@@ -1,11 +1,11 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd";>
+<!DOCTYPE html>
<html>
-<!-- Created by GNU Texinfo 6.8, https://www.gnu.org/software/texinfo/ -->
+<!-- Created by GNU Texinfo 7.0dev, https://www.gnu.org/software/texinfo/ -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!-- This manual is for grep, a pattern matching engine.
-Copyright (C) 1999-2002, 2005, 2008-2022 Free Software Foundation,
+Copyright © 1999-2002, 2005, 2008-2023 Free Software Foundation,
Inc.
Permission is granted to copy, distribute and/or modify this document
@@ -14,10 +14,10 @@
Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
Texts. A copy of the license is included in the section entitled
"GNU Free Documentation License". -->
-<title>General Output Control (GNU Grep 3.8)</title>
+<title>General Output Control (GNU Grep 3.10)</title>
-<meta name="description" content="General Output Control (GNU Grep 3.8)">
-<meta name="keywords" content="General Output Control (GNU Grep 3.8)">
+<meta name="description" content="General Output Control (GNU Grep 3.10)">
+<meta name="keywords" content="General Output Control (GNU Grep 3.10)">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
@@ -31,21 +31,9 @@
<link href="Matching-Control.html" rel="prev" title="Matching Control">
<style type="text/css">
<!--
-a.copiable-anchor {visibility: hidden; text-decoration: none; line-height: 0em}
-a.summary-letter {text-decoration: none}
-blockquote.indentedblock {margin-right: 0em}
-div.display {margin-left: 3.2em}
+a.copiable-link {visibility: hidden; text-decoration: none; line-height: 0em}
div.example {margin-left: 3.2em}
-kbd {font-style: oblique}
-pre.display {font-family: inherit}
-pre.format {font-family: inherit}
-pre.menu-comment {font-family: serif}
-pre.menu-preformatted {font-family: serif}
-span.nolinebreak {white-space: nowrap}
-span.roman {font-family: initial; font-weight: normal}
-span.sansserif {font-family: sans-serif; font-weight: normal}
-span:hover a.copiable-anchor {visibility: visible}
-ul.no-bullet {list-style: none}
+span:hover a.copiable-link {visibility: visible}
-->
</style>
<link rel="stylesheet" type="text/css"
href="https://www.gnu.org/software/gnulib/manual.css";>
@@ -54,87 +42,92 @@
</head>
<body lang="en">
-<div class="subsection" id="General-Output-Control">
-<div class="header">
+<div class="subsection-level-extent" id="General-Output-Control">
+<div class="nav-panel">
<p>
Next: <a href="Output-Line-Prefix-Control.html" accesskey="n"
rel="next">Output Line Prefix Control</a>, Previous: <a
href="Matching-Control.html" accesskey="p" rel="prev">Matching Control</a>, Up:
<a href="Command_002dline-Options.html" accesskey="u" rel="up">Command-line
Options</a> [<a href="index.html#SEC_Contents" title="Table of contents"
rel="contents">Contents</a>][<a href="Index.html" title="Index"
rel="index">Index</a>]</p>
</div>
<hr>
-<span id="General-Output-Control-1"></span><h4 class="subsection">2.1.3
General Output Control</h4>
+<h4 class="subsection" id="General-Output-Control-1"><span>2.1.3 General
Output Control<a class="copiable-link" href="#General-Output-Control-1">
¶</a></span></h4>
-<dl compact="compact">
-<dt id='index-_002dc'><span><samp>-c</samp><a href='#index-_002dc'
class='copiable-anchor'> ¶</a></span></dt>
-<dt><span><samp>--count</samp></span></dt>
-<dd><span id="index-_002d_002dcount"></span>
-<span id="index-counting-lines"></span>
+<dl class="table">
+<dt><samp class="option">-c</samp></dt>
+<dt><samp class="option">--count</samp></dt>
+<dd><a class="index-entry-id" id="index-_002dc"></a>
+<a class="index-entry-id" id="index-_002d_002dcount"></a>
+<a class="index-entry-id" id="index-counting-lines"></a>
<p>Suppress normal output;
instead print a count of matching lines for each input file.
-With the <samp>-v</samp> (<samp>--invert-match</samp>) option,
+With the <samp class="option">-v</samp> (<samp
class="option">--invert-match</samp>) option,
count non-matching lines.
-(<samp>-c</samp> is specified by POSIX.)
+(<samp class="option">-c</samp> is specified by POSIX.)
</p>
</dd>
-<dt id='index-_002d_002dcolor'><span><samp>--color[=<var>WHEN</var>]</samp><a
href='#index-_002d_002dcolor' class='copiable-anchor'> ¶</a></span></dt>
-<dt><span><samp>--colour[=<var>WHEN</var>]</samp></span></dt>
-<dd><span id="index-_002d_002dcolour"></span>
-<span id="index-highlight_002c-color_002c-colour"></span>
+<dt><samp class="option">--color[=<var class="var">WHEN</var>]</samp></dt>
+<dt><samp class="option">--colour[=<var class="var">WHEN</var>]</samp></dt>
+<dd><a class="index-entry-id" id="index-_002d_002dcolor"></a>
+<a class="index-entry-id" id="index-_002d_002dcolour"></a>
+<a class="index-entry-id" id="index-highlight_002c-color_002c-colour"></a>
<p>Surround matched non-empty strings, matching lines, context lines,
file names, line numbers, byte offsets, and separators (for fields and
groups of context lines) with escape sequences to display them in color
on the terminal.
-The colors are defined by the environment variable <code>GREP_COLORS</code>
-and default to
‘<samp>ms=01;31:mc=01;31:sl=:cx=:fn=35:ln=32:bn=32:se=36</samp>’
+The colors are defined by the environment variable <code
class="env">GREP_COLORS</code>
+and default to ‘<samp
class="samp">ms=01;31:mc=01;31:sl=:cx=:fn=35:ln=32:bn=32:se=36</samp>’
for bold red matched text, magenta file names, green line numbers,
green byte offsets, cyan separators, and default terminal colors otherwise.
-See <a href="Environment-Variables.html">Environment Variables</a>.
+See <a class="xref" href="Environment-Variables.html">Environment
Variables</a>.
</p>
-<p><var>WHEN</var> is ‘<samp>always</samp>’ to use colors,
‘<samp>never</samp>’ to not use
-colors, or ‘<samp>auto</samp>’ to use colors if standard output is
associated
-with a terminal device and the <code>TERM</code> environment variable’s
value
+<p><var class="var">WHEN</var> is ‘<samp
class="samp">always</samp>’ to use colors, ‘<samp
class="samp">never</samp>’ to not use
+colors, or ‘<samp class="samp">auto</samp>’ to use colors if
standard output is associated
+with a terminal device and the <code class="env">TERM</code> environment
variable’s value
suggests that the terminal supports colors.
-Plain <samp>--color</samp> is treated like <samp>--color=auto</samp>;
-if no <samp>--color</samp> option is given, the default is
<samp>--color=never</samp>.
+Plain <samp class="option">--color</samp> is treated like <samp
class="option">--color=auto</samp>;
+if no <samp class="option">--color</samp> option is given, the default is
<samp class="option">--color=never</samp>.
</p>
</dd>
-<dt id='index-_002dL'><span><samp>-L</samp><a href='#index-_002dL'
class='copiable-anchor'> ¶</a></span></dt>
-<dt><span><samp>--files-without-match</samp></span></dt>
-<dd><span id="index-_002d_002dfiles_002dwithout_002dmatch"></span>
-<span id="index-files-which-don_0027t-match"></span>
+<dt><samp class="option">-L</samp></dt>
+<dt><samp class="option">--files-without-match</samp></dt>
+<dd><a class="index-entry-id" id="index-_002dL"></a>
+<a class="index-entry-id" id="index-_002d_002dfiles_002dwithout_002dmatch"></a>
+<a class="index-entry-id" id="index-files-which-don_0027t-match"></a>
<p>Suppress normal output;
instead print the name of each input file from which
no output would normally have been printed.
</p>
</dd>
-<dt id='index-_002dl'><span><samp>-l</samp><a href='#index-_002dl'
class='copiable-anchor'> ¶</a></span></dt>
-<dt><span><samp>--files-with-matches</samp></span></dt>
-<dd><span id="index-_002d_002dfiles_002dwith_002dmatches"></span>
-<span id="index-names-of-matching-files"></span>
+<dt><samp class="option">-l</samp></dt>
+<dt><samp class="option">--files-with-matches</samp></dt>
+<dd><a class="index-entry-id" id="index-_002dl"></a>
+<a class="index-entry-id" id="index-_002d_002dfiles_002dwith_002dmatches"></a>
+<a class="index-entry-id" id="index-names-of-matching-files"></a>
<p>Suppress normal output;
instead print the name of each input file from which
output would normally have been printed.
Scanning each input file stops upon first match.
-(<samp>-l</samp> is specified by POSIX.)
+(<samp class="option">-l</samp> is specified by POSIX.)
</p>
</dd>
-<dt id='index-_002dm'><span><samp>-m <var>num</var></samp><a
href='#index-_002dm' class='copiable-anchor'> ¶</a></span></dt>
-<dt><span><samp>--max-count=<var>num</var></samp></span></dt>
-<dd><span id="index-_002d_002dmax_002dcount"></span>
-<span id="index-max_002dcount"></span>
-<p>Stop after the first <var>num</var> selected lines.
-If <var>num</var> is zero, <code>grep</code> stops right away without reading
input.
-A <var>num</var> of -1 is treated as infinity and <code>grep</code>
+<dt><samp class="option">-m <var class="var">num</var></samp></dt>
+<dt><samp class="option">--max-count=<var class="var">num</var></samp></dt>
+<dd><a class="index-entry-id" id="index-_002dm"></a>
+<a class="index-entry-id" id="index-_002d_002dmax_002dcount"></a>
+<a class="index-entry-id" id="index-max_002dcount"></a>
+<p>Stop after the first <var class="var">num</var> selected lines.
+If <var class="var">num</var> is zero, <code class="command">grep</code> stops
right away without reading input.
+A <var class="var">num</var> of −1 is treated as infinity and <code
class="command">grep</code>
does not stop; this is the default.
</p>
<p>If the input is standard input from a regular file,
-and <var>num</var> selected lines are output,
-<code>grep</code> ensures that the standard input is positioned
+and <var class="var">num</var> selected lines are output,
+<code class="command">grep</code> ensures that the standard input is positioned
just after the last selected line before exiting,
regardless of the presence of trailing context lines.
This enables a calling process to resume a search.
For example, the following shell script makes use of it:
</p>
<div class="example">
-<pre class="example">while grep -m 1 'PATTERN'
+<pre class="example-preformatted">while grep -m 1 'PATTERN'
do
echo xxxx
done < FILE
@@ -144,7 +137,7 @@
file:
</p>
<div class="example">
-<pre class="example"># This probably will not work.
+<pre class="example-preformatted"># This probably will not work.
cat FILE |
while grep -m 1 'PATTERN'
do
@@ -152,54 +145,57 @@
done
</pre></div>
-<span id="index-context-lines"></span>
-<p>When <code>grep</code> stops after <var>num</var> selected lines,
+<a class="index-entry-id" id="index-context-lines"></a>
+<p>When <code class="command">grep</code> stops after <var
class="var">num</var> selected lines,
it outputs any trailing context lines.
-When the <samp>-c</samp> or <samp>--count</samp> option is also used,
-<code>grep</code> does not output a count greater than <var>num</var>.
-When the <samp>-v</samp> or <samp>--invert-match</samp> option is also used,
-<code>grep</code> stops after outputting <var>num</var> non-matching lines.
+When the <samp class="option">-c</samp> or <samp class="option">--count</samp>
option is also used,
+<code class="command">grep</code> does not output a count greater than <var
class="var">num</var>.
+When the <samp class="option">-v</samp> or <samp
class="option">--invert-match</samp> option is also used,
+<code class="command">grep</code> stops after outputting <var
class="var">num</var> non-matching lines.
</p>
</dd>
-<dt id='index-_002do'><span><samp>-o</samp><a href='#index-_002do'
class='copiable-anchor'> ¶</a></span></dt>
-<dt><span><samp>--only-matching</samp></span></dt>
-<dd><span id="index-_002d_002donly_002dmatching"></span>
-<span id="index-only-matching"></span>
+<dt><samp class="option">-o</samp></dt>
+<dt><samp class="option">--only-matching</samp></dt>
+<dd><a class="index-entry-id" id="index-_002do"></a>
+<a class="index-entry-id" id="index-_002d_002donly_002dmatching"></a>
+<a class="index-entry-id" id="index-only-matching"></a>
<p>Print only the matched non-empty parts of matching lines,
with each such part on a separate output line.
Output lines use the same delimiters as input, and delimiters are null
-bytes if <samp>-z</samp> (<samp>--null-data</samp>) is also used (see <a
href="Other-Options.html">Other Options</a>).
+bytes if <samp class="option">-z</samp> (<samp
class="option">--null-data</samp>) is also used (see <a class="pxref"
href="Other-Options.html">Other Options</a>).
</p>
</dd>
-<dt id='index-_002dq'><span><samp>-q</samp><a href='#index-_002dq'
class='copiable-anchor'> ¶</a></span></dt>
-<dt><span><samp>--quiet</samp></span></dt>
-<dt><span><samp>--silent</samp></span></dt>
-<dd><span id="index-_002d_002dquiet"></span>
-<span id="index-_002d_002dsilent"></span>
-<span id="index-quiet_002c-silent"></span>
+<dt><samp class="option">-q</samp></dt>
+<dt><samp class="option">--quiet</samp></dt>
+<dt><samp class="option">--silent</samp></dt>
+<dd><a class="index-entry-id" id="index-_002dq"></a>
+<a class="index-entry-id" id="index-_002d_002dquiet"></a>
+<a class="index-entry-id" id="index-_002d_002dsilent"></a>
+<a class="index-entry-id" id="index-quiet_002c-silent"></a>
<p>Quiet; do not write anything to standard output.
Exit immediately with zero status if any match is found,
even if an error was detected.
-Also see the <samp>-s</samp> or <samp>--no-messages</samp> option.
-Portability note: Solaris 10 <code>grep</code> lacks <samp>-q</samp>;
+Also see the <samp class="option">-s</samp> or <samp
class="option">--no-messages</samp> option.
+Portability note: Solaris 10 <code class="command">grep</code> lacks <samp
class="option">-q</samp>;
portable shell scripts typically can redirect standard output to
-<samp>/dev/null</samp> instead of using <samp>-q</samp>.
-(<samp>-q</samp> is specified by POSIX.)
+<samp class="file">/dev/null</samp> instead of using <samp
class="option">-q</samp>.
+(<samp class="option">-q</samp> is specified by POSIX.)
</p>
</dd>
-<dt id='index-_002ds'><span><samp>-s</samp><a href='#index-_002ds'
class='copiable-anchor'> ¶</a></span></dt>
-<dt><span><samp>--no-messages</samp></span></dt>
-<dd><span id="index-_002d_002dno_002dmessages"></span>
-<span id="index-suppress-error-messages"></span>
+<dt><samp class="option">-s</samp></dt>
+<dt><samp class="option">--no-messages</samp></dt>
+<dd><a class="index-entry-id" id="index-_002ds"></a>
+<a class="index-entry-id" id="index-_002d_002dno_002dmessages"></a>
+<a class="index-entry-id" id="index-suppress-error-messages"></a>
<p>Suppress error messages about nonexistent or unreadable files.
-(<samp>-s</samp> is specified by POSIX.)
+(<samp class="option">-s</samp> is specified by POSIX.)
</p>
</dd>
</dl>
</div>
<hr>
-<div class="header">
+<div class="nav-panel">
<p>
Next: <a href="Output-Line-Prefix-Control.html">Output Line Prefix
Control</a>, Previous: <a href="Matching-Control.html">Matching Control</a>,
Up: <a href="Command_002dline-Options.html">Command-line Options</a> [<a
href="index.html#SEC_Contents" title="Table of contents"
rel="contents">Contents</a>][<a href="Index.html" title="Index"
rel="index">Index</a>]</p>
</div>
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Jim Meyering <=