docs/manual/programs/logresolve.xml

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE manualpage SYSTEM "../style/manualpage.dtd">
<?xml-stylesheet type="text/xsl" href="../style/manual.en.xsl"?>
<!-- $Revision: 1.5 $ -->

<!--
 Copyright 2003-2004 The Apache Software Foundation

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-->

<manualpage metafile="logresolve.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>