1<?xml version="1.0" encoding="ISO-8859-1"?> 2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 3<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!-- 4 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 5 This file is generated from xml source: DO NOT EDIT 6 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 7 --> 8<title>logresolve - Resolve IP-addresses to hostnames in Apache 9 log files - Apache HTTP Server</title> 10<link href="/style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> 11<link href="/style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> 12<link href="/style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link rel="stylesheet" type="text/css" href="/style/css/prettify.css" /> 13<script src="/style/scripts/prettify.js" type="text/javascript"> 14</script> 15 16<link href="/images/favicon.ico" rel="shortcut icon" /></head> 17<body id="manual-page"><div id="page-header"> 18<p class="menu"><a href="/mod/">Modules</a> | <a href="/mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="/glossary.html">Glossary</a> | <a href="/sitemap.html">Sitemap</a></p> 19<p class="apache">Apache HTTP Server Version 2.2</p> 20<img alt="" src="/images/feather.gif" /></div> 21<div class="up"><a href="./"><img title="<-" alt="<-" src="/images/left.gif" /></a></div> 22<div id="path"> 23<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.2</a> > <a href="./">Programs</a></div><div id="page-content"><div id="preamble"><h1>logresolve - Resolve IP-addresses to hostnames in Apache 24 log files</h1> 25<div class="toplang"> 26<p><span>Available Languages: </span><a href="/en/programs/logresolve.html" title="English"> en </a> | 27<a href="/ko/programs/logresolve.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | 28<a href="/tr/programs/logresolve.html" hreflang="tr" rel="alternate" title="T�rk�e"> tr </a></p> 29</div> 30 31 <p><code>logresolve</code> is a post-processing program to 32 resolve IP-addresses in Apache's access logfiles. To minimize 33 impact on your nameserver, logresolve has its very own internal 34 hash-table cache. This means that each IP number will only be 35 looked up the first time it is found in the log file.</p> 36 37 <p>Takes an Apache log file on standard input. The IP addresses 38 must be the first thing on each line and must be separated from 39 the remainder of the line by a space.</p> 40</div> 41<div id="quickview"><ul id="toc"><li><img alt="" src="/images/down.gif" /> <a href="#synopsis">Synopsis</a></li> 42<li><img alt="" src="/images/down.gif" /> <a href="#options">Options</a></li> 43</ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div> 44<div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div> 45<div class="section"> 46<h2><a name="synopsis" id="synopsis">Synopsis</a></h2> 47 48 <p><code><strong>logresolve</strong> [ -<strong>s</strong> 49 <var>filename</var> ] [ -<strong>c</strong> ] < 50 <var>access_log</var> > <var>access_log.new</var></code></p> 51</div><div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div> 52<div class="section"> 53<h2><a name="options" id="options">Options</a></h2> 54 55<dl> 56 57<dt><code>-s <var>filename</var></code></dt> 58 59<dd>Specifies a filename to record statistics.</dd> 60 61<dt><code>-c</code></dt> 62 63<dd>This causes <code>logresolve</code> to apply some DNS checks: 64after finding the hostname from the IP address, it looks up the IP 65addresses for the hostname and checks that one of these matches the 66original address.</dd> 67 68</dl> 69</div></div> 70<div class="bottomlang"> 71<p><span>Available Languages: </span><a href="/en/programs/logresolve.html" title="English"> en </a> | 72<a href="/ko/programs/logresolve.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | 73<a href="/tr/programs/logresolve.html" hreflang="tr" rel="alternate" title="T�rk�e"> tr </a></p> 74</div><div class="top"><a href="#page-header"><img src="/images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. 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