<?xml version='1.0' encoding='UTF-8' ?>

<!DOCTYPE manualpage SYSTEM "/style/manualpage.dtd">

<?xml-stylesheet type="text/xsl" href="/style/manual.en.xsl"?>

<manualpage metafile="httpd.xml.meta">

<parentdocument href="./">Programs</parentdocument>

<title>logresolve - Resolve IP-addresses to hostnames in Apache

log files</title>

<summary>

<p><code>logresolve</code> is a post-processing program to

resolve IP-addresses in Apache's access logfiles. To minimize

impact on your nameserver, logresolve has its very own internal

hash-table cache. This means that each IP number will only be

looked up the first time it is found in the log file.</p>

<p>Takes an Apache log file on standard input. The IP addresses

must be the first thing on each line and must be seperated from

the remainder of the line by a space.</p>

</summary>

<section id="synopsis"><title>Synopsis</title>

<p><code><strong>logresolve</strong> [ -<strong>s</strong>

<var>filename</var> ] [ -<strong>c</strong> ] &lt;

<var>access_log</var> &gt; <var>access_log.new</var></code></p>

</section>

<section id="options"><title>Options</title>

<dl>

<dt><code>-s <var>filename</var></code></dt>

<dd>Specifies a filename to record statistics.</dd>

<dt><code>-c</code></dt>

<dd>This causes <code>logresolve</code> to apply some DNS checks:

after finding the hostname from the IP address, it looks up the IP

addresses for the hostname and checks that one of these matches the

original address.</dd>

</dl>

</section>

</manualpage>