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-<head>
-<title>grep(1) - Plan 9 from User Space</title>
-<meta content="text/html; charset=utf-8" http-equiv=Content-Type>
-</head>
-<body bgcolor=#ffffff>
-<table border=0 cellpadding=0 cellspacing=0 width=100%>
-<tr height=10><td>
-<tr><td width=20><td>
-<tr><td width=20><td><b>GREP(1)</b><td align=right><b>GREP(1)</b>
-<tr><td width=20><td colspan=2>
- <br>
-<p><font size=+1><b>NAME </b></font><br>
-
-<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
-
- grep, g &ndash; search a file for a pattern<br>
-
-</table>
-<p><font size=+1><b>SYNOPSIS </b></font><br>
-
-<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
-
- <tt><font size=+1>grep</font></tt> [ <i>option ...</i> ] <i>pattern</i> [ <i>file ...</i> ]
- <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
-
- <tt><font size=+1>g</font></tt> [ <i>option ...</i> ] <i>pattern</i> [ <i>file ...</i> ]<br>
-
-</table>
-<p><font size=+1><b>DESCRIPTION </b></font><br>
-
-<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
-
- <i>Grep</i> searches the input <i>files</i> (standard input default) for lines
- that match the <i>pattern</i>, a regular expression as defined in <a href="../man7/regexp.html"><i>regexp</i>(7)</a>
- with the addition of a newline character as an alternative (substitute
- for <tt><font size=+1>|</font></tt>) with lowest precedence. Normally, each line matching the
- pattern is &#8216;selected&#8217;, and each selected line is copied to
- the standard output. The options are<br>
- <tt><font size=+1>&#8722;c</font></tt>&nbsp;&nbsp;&nbsp;&nbsp;Print only a count of matching lines.<br>
- <tt><font size=+1>&#8722;h</font></tt>&nbsp;&nbsp;&nbsp;&nbsp;Do not print file name tags (headers) with output lines.<br>
- <tt><font size=+1>&#8722;e</font></tt>&nbsp;&nbsp;&nbsp;&nbsp;The following argument is taken as a <i>pattern</i>. This option makes
- it easy to specify patterns that might confuse argument parsing,
- such as <tt><font size=+1>&#8722;n</font></tt>.<br>
- <tt><font size=+1>&#8722;i</font></tt>&nbsp;&nbsp;&nbsp;&nbsp;Ignore alphabetic case distinctions. The implementation folds
- into lower case all letters in the pattern and input before interpretation.
- Matched lines are printed in their original form.<br>
- <tt><font size=+1>&#8722;l</font></tt>&nbsp;&nbsp;&nbsp;&nbsp;(ell) Print the names of files with selected lines; don&#8217;t print
- the lines.<br>
- <tt><font size=+1>&#8722;L</font></tt>&nbsp;&nbsp;&nbsp;&nbsp;Print the names of files with no selected lines; the converse
- of <tt><font size=+1>&#8722;l</font></tt>.<br>
- <tt><font size=+1>&#8722;n</font></tt>&nbsp;&nbsp;&nbsp;&nbsp;Mark each printed line with its line number counted in its file.<br>
- <tt><font size=+1>&#8722;s</font></tt>&nbsp;&nbsp;&nbsp;&nbsp;Produce no output, but return status.<br>
- <tt><font size=+1>&#8722;v</font></tt>&nbsp;&nbsp;&nbsp;&nbsp;Reverse: print lines that do not match the pattern.<br>
- <tt><font size=+1>&#8722;f</font></tt>&nbsp;&nbsp;&nbsp;&nbsp;The pattern argument is the name of a file containing regular
- expressions one per line.<br>
- <tt><font size=+1>&#8722;b</font></tt>&nbsp;&nbsp;&nbsp;&nbsp;Don&#8217;t buffer the output: write each output line as soon as it
- is discovered.
- <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
-
- Output lines are tagged by file name when there is more than one
- input file. (To force this tagging, include <tt><font size=+1>/dev/null</font></tt> as a file
- name argument.)
- <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
-
- Care should be taken when using the shell metacharacters <tt><font size=+1>$*[^|()=\</font></tt>
- and newline in <i>pattern</i>; it is safest to enclose the entire expression
- in single quotes <tt><font size=+1>'</font></tt>...<tt><font size=+1>'</font></tt>. An expression starting with &#8217;*&#8217; will treat
- the rest of the expression as literal characters.
- <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
-
- <i>G</i> invokes grep with <tt><font size=+1>&#8722;n</font></tt> and forces tagging of output lines by file
- name. If no files are listed, it searches all files matching<br>
-
- <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
-
- <tt><font size=+1>*.C *.b *.c *.h *.m *.cc *.java *.py *.tex *.ms<br>
- </font></tt>
- </table>
-
-</table>
-<p><font size=+1><b>SOURCE </b></font><br>
-
-<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
-
- <tt><font size=+1>/usr/local/plan9/src/cmd/grep<br>
- /usr/local/plan9/bin/g<br>
- </font></tt>
-</table>
-<p><font size=+1><b>SEE ALSO </b></font><br>
-
-<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
-
- <a href="../man1/ed.html"><i>ed</i>(1)</a>, <a href="../man1/awk.html"><i>awk</i>(1)</a>, <a href="../man1/sed.html"><i>sed</i>(1)</a>, <a href="../man1/sam.html"><i>sam</i>(1)</a>, <a href="../man7/regexp.html"><i>regexp</i>(7)</a><br>
-
-</table>
-<p><font size=+1><b>DIAGNOSTICS </b></font><br>
-
-<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
-
- Exit status is null if any lines are selected, or non-null when
- no lines are selected or an error occurs.<br>
-
-</table>
-
-<td width=20>
-<tr height=20><td>
-</table>
-<!-- TRAILER -->
-<table border=0 cellpadding=0 cellspacing=0 width=100%>
-<tr height=15><td width=10><td><td width=10>
-<tr><td><td>
-<center>
-<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a>
-</center>
-</table>
-<!-- TRAILER -->
-</body></html>