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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML><HEAD><TITLE>Man page of QSGREP</TITLE>
<META name='KeyWords' content='Quality of Service, QoS, Apache Web Server, Web application security, WAF, Open Source Software, Security, Proxy'/>
<META name='author' content='Pascal Buchbinder' />
</HEAD><BODY>
<H1>QSGREP</H1>
Section: qsgrep man page (1)<BR>Updated: May 2023<BR><A HREF="#index">Index</A>
<A HREF="index.html#utilities">Return to Main Contents</A><HR>
<P>
<A NAME="lbAB"> </A>
<H2>NAME</H2>
qsgrep - prints matching patterns within a file.
<A NAME="lbAC"> </A>
<H2>SYNOPSIS</H2>
qsgrep -e <pattern> -o <sub string> [<path>]
<A NAME="lbAD"> </A>
<H2>DESCRIPTION</H2>
qsgrep is a simple tool to search patterns within files. It uses regular expressions to find patterns and prints the submatches within a pre-defined format string.
<A NAME="lbAE"> </A>
<H2>OPTIONS</H2>
<DL COMPACT>
<DT>-e <pattern> <DD>
Specifies the search pattern.
<DT>-o <string> <DD>
Defines the output string where $0-$9 are substituted by the submatches of the regular expression.
<DT><path> <DD>
Defines the input file to process. qsgrep reads from from standard input if this parameter is omitted.
<P>
</DL>
<A NAME="lbAF"> </A>
<H2>EXAMPLE</H2>
Shows the IP addresses of clients causing mod_qos(031) messages):
<P>
<BR> qsgrep -e 'mod_qos\(031\).*, c=([a-zA-Z0-9:.]*)' -o 'ip=$1' error_log
<P>
<A NAME="lbAG"> </A>
<H2>SEE ALSO</H2>
<A HREF="qsdt.1.html">qsdt</A>(1), <A HREF="qsexec.1.html">qsexec</A>(1), <A HREF="qsfilter2.1.html">qsfilter2</A>(1), <A HREF="qsgeo.1.html">qsgeo</A>(1), <A HREF="qshead.1.html">qshead</A>(1), <A HREF="qslog.1.html">qslog</A>(1), <A HREF="qslogger.1.html">qslogger</A>(1), <A HREF="qspng.1.html">qspng</A>(1), <A HREF="qsre.1.html">qsre</A>(1), <A HREF="qsrespeed.1.html">qsrespeed</A>(1), <A HREF="qsrotate.1.html">qsrotate</A>(1), <A HREF="qssign.1.html">qssign</A>(1), <A HREF="qstail.1.html">qstail</A>(1)
<A NAME="lbAH"> </A>
<H2>AUTHOR</H2>
Pascal Buchbinder, <A HREF="http://mod-qos.sourceforge.net/">http://mod-qos.sourceforge.net/</A>
<P>
<HR>
<A NAME="index"> </A><H2>Index</H2>
<DL>
<DT><A HREF="#lbAB">NAME</A><DD>
<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT><A HREF="#lbAE">OPTIONS</A><DD>
<DT><A HREF="#lbAF">EXAMPLE</A><DD>
<DT><A HREF="#lbAG">SEE ALSO</A><DD>
<DT><A HREF="#lbAH">AUTHOR</A><DD>
</DL>
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