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Changes to manual/html_node/Output-Line-Prefix-Control.html
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From: |
Karl Berry |
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Subject: |
Changes to manual/html_node/Output-Line-Prefix-Control.html |
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Date: |
Sun, 24 May 2009 18:43:10 +0000 |
CVSROOT: /web/grep
Module name: grep
Changes by: Karl Berry <karl> 09/05/24 18:43:01
Index: manual/html_node/Output-Line-Prefix-Control.html
===================================================================
RCS file: manual/html_node/Output-Line-Prefix-Control.html
diff -N manual/html_node/Output-Line-Prefix-Control.html
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ manual/html_node/Output-Line-Prefix-Control.html 24 May 2009 18:42:59
-0000 1.1
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+<html lang="en">
+<head>
+<title>Output Line Prefix Control - GNU Grep 2.5.4</title>
+<meta http-equiv="Content-Type" content="text/html">
+<meta name="description" content="GNU Grep 2.5.4">
+<meta name="generator" content="makeinfo 4.13">
+<link title="Top" rel="start" href="index.html#Top">
+<link rel="up" href="Command_002dline-Options.html#Command_002dline-Options"
title="Command-line Options">
+<link rel="prev" href="General-Output-Control.html#General-Output-Control"
title="General Output Control">
+<link rel="next" href="Context-Line-Control.html#Context-Line-Control"
title="Context Line Control">
+<link href="http://www.gnu.org/software/texinfo/"; rel="generator-home"
title="Texinfo Homepage">
+<!--
+This manual is for `grep', a pattern matching engine.
+
+Copyright (C) 1999, 2000, 2001, 2002, 2005, 2008, 2009 Free
+Software Foundation, Inc.
+
+ Permission is granted to copy, distribute and/or modify this
+ document under the terms of the GNU Free Documentation License,
+ Version 1.3 or any later version published by the Free Software
+ Foundation; with no 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''.
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+<style type="text/css"><!--
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+</head>
+<body>
+<div class="node">
+<a name="Output-Line-Prefix-Control"></a>
+<p>
+Next: <a rel="next" accesskey="n"
href="Context-Line-Control.html#Context-Line-Control">Context Line Control</a>,
+Previous: <a rel="previous" accesskey="p"
href="General-Output-Control.html#General-Output-Control">General Output
Control</a>,
+Up: <a rel="up" accesskey="u"
href="Command_002dline-Options.html#Command_002dline-Options">Command-line
Options</a>
+<hr>
+</div>
+
+<h4 class="subsection">2.1.4 Output Line Prefix Control</h4>
+
+<p>When several prefix fields are to be output,
+the order is always file name, line number, and byte offset,
+regardless of the order in which these options were specified.
+
+ <dl>
+<dt>‘<samp><span
class="samp">-b</span></samp>’<dt>‘<samp><span
class="samp">--byte-offset</span></samp>’<dd><a
name="index-g_t_002db-52"></a><a
name="index-g_t_002d_002dbyte_002doffset-53"></a><a
name="index-byte-offset-54"></a>Print the 0-based byte offset within the input
file
+before each line of output.
+If ‘<samp><span class="samp">-o</span></samp>’ (‘<samp><span
class="samp">--only-matching</span></samp>’) is specified,
+print the offset of the matching part itself.
+When <samp><span class="command">grep</span></samp> runs on <span
class="sc">ms-dos</span> or <span class="sc">ms</span>-Windows,
+the printed byte offsets depend on whether
+the ‘<samp><span class="samp">-u</span></samp>’
(‘<samp><span class="samp">--unix-byte-offsets</span></samp>’)
option is used;
+see below.
+
+ <br><dt>‘<samp><span
class="samp">-H</span></samp>’<dt>‘<samp><span
class="samp">--with-filename</span></samp>’<dd><a
name="index-g_t_002dH-55"></a><a
name="index-g_t_002d_002dwith_002dfilename-56"></a><a
name="index-with-filename-prefix-57"></a>Print the file name for each match.
+This is the default when there is more than one file to search.
+
+ <br><dt>‘<samp><span
class="samp">-h</span></samp>’<dt>‘<samp><span
class="samp">--no-filename</span></samp>’<dd><a
name="index-g_t_002dh-58"></a><a
name="index-g_t_002d_002dno_002dfilename-59"></a><a
name="index-no-filename-prefix-60"></a>Suppress the prefixing of file names on
output.
+This is the default when there is only one file
+(or only standard input) to search.
+
+ <br><dt>‘<samp><span
class="samp">--label=</span><var>LABEL</var></samp>’<dd><a
name="index-g_t_002d_002dlabel-61"></a><a
name="index-changing-name-of-standard-input-62"></a>Display input actually
coming from standard input
+as input coming from file <var>LABEL</var>.
+This is especially useful for tools like <samp><span
class="command">zgrep</span></samp>;
+e.g.:
+
+ <pre class="example"> gzip -cd foo.gz | grep --label=foo
something
+</pre>
+ <br><dt>‘<samp><span
class="samp">-n</span></samp>’<dt>‘<samp><span
class="samp">--line-number</span></samp>’<dd><a
name="index-g_t_002dn-63"></a><a
name="index-g_t_002d_002dline_002dnumber-64"></a><a
name="index-line-numbering-65"></a>Prefix each line of output with the 1-based
line number within its input file.
+(‘<samp><span class="samp">-n</span></samp>’ is specified by <span
class="sc">posix</span>.)
+
+ <br><dt>‘<samp><span
class="samp">-T</span></samp>’<dt>‘<samp><span
class="samp">--initial-tab</span></samp>’<dd><a
name="index-g_t_002dT-66"></a><a
name="index-g_t_002d_002dinitial_002dtab-67"></a><a
name="index-tab_002daligned-content-lines-68"></a>Make sure that the first
character of actual line content lies on a tab stop,
+so that the alignment of tabs looks normal.
+This is useful with options that prefix their output to the actual content:
+‘<samp><span class="samp">-H</span></samp>’, ‘<samp><span
class="samp">-n</span></samp>’, and ‘<samp><span
class="samp">-b</span></samp>’.
+In order to improve the probability that lines
+from a single file will all start at the same column,
+this also causes the line number and byte offset (if present)
+to be printed in a minimum-size field width.
+
+ <br><dt>‘<samp><span
class="samp">-u</span></samp>’<dt>‘<samp><span
class="samp">--unix-byte-offsets</span></samp>’<dd><a
name="index-g_t_002du-69"></a><a
name="index-g_t_002d_002dunix_002dbyte_002doffsets-70"></a><a
name="index-g_t_0040sc_007bms_002ddos_007d_002f_0040sc_007bms_007d_002dWindows-byte-offsets-71"></a><a
name="index-byte-offsets_002c-on-_0040sc_007bms_002ddos_007d_002f_0040sc_007bms_007d_002dWindows-72"></a>Report
Unix-style byte offsets.
+This option causes <samp><span class="command">grep</span></samp> to report
byte offsets
+as if the file were a Unix-style text file,
+i.e., the byte offsets ignore the <code>CR</code> characters that were
stripped.
+This will produce results identical
+to running <samp><span class="command">grep</span></samp> on a Unix machine.
+This option has no effect unless the ‘<samp><span
class="samp">-b</span></samp>’ option is also used;
+it has no effect on platforms other than <span class="sc">ms-dos</span> and
<span class="sc">ms</span>-Windows.
+
+ <br><dt>‘<samp><span
class="samp">-Z</span></samp>’<dt>‘<samp><span
class="samp">--null</span></samp>’<dd><a name="index-g_t_002dZ-73"></a><a
name="index-g_t_002d_002dnull-74"></a><a
name="index-zero_002dterminated-file-names-75"></a>Output a zero byte (the
<span class="sc">ascii</span> <code>NUL</code> character)
+instead of the character that normally follows a file name.
+For example,
+‘<samp><span class="samp">grep -lZ</span></samp>’ outputs a zero
byte after each file name
+instead of the usual newline.
+This option makes the output unambiguous,
+even in the presence of file names containing unusual characters like
newlines.
+This option can be used with commands like
+‘<samp><span class="samp">find -print0</span></samp>’,
‘<samp><span class="samp">perl -0</span></samp>’,
‘<samp><span class="samp">sort -z</span></samp>’, and
‘<samp><span class="samp">xargs -0</span></samp>’
+to process arbitrary file names,
+even those that contain newline characters.
+
+ </dl>
+
+ </body></html>
+
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