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| <title>logresolve - Resolve IP-addresses to hostnames in Apache |
| log files - Apache HTTP Server</title> |
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| <p class="apache">Apache HTTP Server Version 2.0</p> |
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| <p>This document refers to the <strong>2.0</strong> version of Apache httpd, which <strong>is no longer maintained</strong>. Upgrade, and refer to the current version of httpd instead, documented at:</p> |
| <ul><li><a href="http://httpd.apache.org/docs/current/">Current release version of Apache HTTP Server documentation</a></li></ul><p>You may follow <a href="http://httpd.apache.org/docs/current/programs/logresolve.html">this link</a> to go to the current version of this document.</p></div><div id="preamble"><h1>logresolve - Resolve IP-addresses to hostnames in Apache |
| log files</h1> |
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| |
| <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> |
| </div> |
| <div id="quickview"><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#synopsis">Synopsis</a></li> |
| <li><img alt="" src="../images/down.gif" /> <a href="#options">Options</a></li> |
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| <div class="section"> |
| <h2><a name="synopsis" id="synopsis">Synopsis</a></h2> |
| |
| <p><code><strong>logresolve</strong> [ -<strong>s</strong> |
| <var>filename</var> ] [ -<strong>c</strong> ] < |
| <var>access_log</var> > <var>access_log.new</var></code></p> |
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| <div class="section"> |
| <h2><a name="options" id="options">Options</a></h2> |
| |
| <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> |
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