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<?xml version="1.0" encoding="ISO-8859-1"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!-- XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX This file is generated from xml source: DO NOT EDIT XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX --><title>rotatelogs - Piped logging program to rotate Apache logs - Apache HTTP Server</title><link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /><link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /><link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link href="../images/favicon.ico" rel="shortcut icon" /></head><body id="manual-page"><div id="page-header"><p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p><p class="apache">Apache HTTP Server Version 2.2</p><img alt="" src="../images/feather.gif" /></div><div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div><div id="path"><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>rotatelogs - Piped logging program to rotate Apache logs</h1><div class="toplang"><p><span>Available Languages: </span><a href="../en/programs/rotatelogs.html" title="English"> en </a> |<a href="../ko/programs/rotatelogs.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p></div> <p><code>rotatelogs</code> is a simple program for use in conjunction with Apache's piped logfile feature. It supports rotation based on a time interval or maximum size of the log.</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><li><img alt="" src="../images/down.gif" /> <a href="#examples">Examples</a></li><li><img alt="" src="../images/down.gif" /> <a href="#portability">Portability</a></li></ul></div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="section"><h2><a name="synopsis" id="synopsis">Synopsis</a></h2> <p><code><strong>rotatelogs</strong> [ -<strong>l</strong> ] [ -<strong>f</strong> ] <var>logfile</var> <var>rotationtime</var>|<var>filesize</var>M [ <var>offset</var> ]</code></p></div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="section"><h2><a name="options" id="options">Options</a></h2><dl><dt><code>-l</code></dt><dd>Causes the use of local time rather than GMT as the base for theinterval or for <code>strftime(3)</code> formatting with size-based rotation. Note that using <code>-l</code> in an environment whichchanges the GMT offset (such as for BST or DST) can lead to unpredictableresults!</dd><dt><code>-f</code></dt><dd>Causes the logfile to be opened immediately, as soon as<code>rotatelogs</code> starts, instead of waiting for thefirst logfile entry to be read (for non-busy sites, there may bea substantial delay between when the server is startedand when the first request is handled, meaning that theassociated logfile does not "exist" until then, whichcauses problems from some automated logging tools).<em>Available in version 2.2.9 and later.</em></dd><dt><code><var>logfile</var></code></dt><dd>The path plus basename of the logfile. If <var>logfile</var>includes any '%' characters, it is treated as a format string for<code>strftime(3)</code>. Otherwise, the suffix<var>.nnnnnnnnnn</var> is automatically added and is the time inseconds. Both formats compute the start time from the beginning ofthe current period. For example, if a rotation time of 86400 is specified, the hour, minute, and second fields created from the<code>strftime(3)</code> format will all be zero, referring to thebeginning of the current 24-hour period (midnight).</dd><dt><code><var>rotationtime</var></code></dt><dd>The time between log file rotations in seconds. The rotationoccurs at the beginning of this interval. For example, if therotation time is 3600, the log file will be rotated at the beginningof every hour; if the rotation time is 86400, the log file will berotated every night at midnight. (If no data is logged during aninterval, no file will be created.)</dd><dt><code><var>filesize</var>M</code></dt><dd>The maximum file size in megabytes followed by the letter<code>M</code> to specify size rather than time.</dd><dt><code><var>offset</var></code></dt><dd>The number of minutes offset from UTC. If omitted, zero isassumed and UTC is used. For example, to use local time in the zoneUTC -5 hours, specify a value of <code>-300</code> for this argument.In most cases, <code>-l</code> should be used instead of specifyingan offset.</dd></dl></div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="section"><h2><a name="examples" id="examples">Examples</a></h2><div class="example"><p><code> CustomLog "|bin/rotatelogs /var/logs/logfile 86400" common</code></p></div> <p>This creates the files /var/logs/logfile.nnnn where nnnn is the system time at which the log nominally starts (this time will always be a multiple of the rotation time, so you can synchronize cron scripts with it). At the end of each rotation time (here after 24 hours) a new log is started.</p><div class="example"><p><code> CustomLog "|bin/rotatelogs -l /var/logs/logfile.%Y.%m.%d 86400" common</code></p></div> <p>This creates the files /var/logs/logfile.yyyy.mm.dd where yyyy is the year, mm is the month, and dd is the day of the month. Logging will switch to a new file every day at midnight, local time.</p><div class="example"><p><code> CustomLog "|bin/rotatelogs /var/logs/logfile 5M" common</code></p></div> <p>This configuration will rotate the logfile whenever it reaches a size of 5 megabytes.</p><div class="example"><p><code> ErrorLog "|bin/rotatelogs /var/logs/errorlog.%Y-%m-%d-%H_%M_%S 5M"</code></p></div> <p>This configuration will rotate the error logfile whenever it reaches a size of 5 megabytes, and the suffix to the logfile name will be created of the form <code>errorlog.YYYY-mm-dd-HH_MM_SS</code>.</p> </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="section"><h2><a name="portability" id="portability">Portability</a></h2><p>The following logfile format string substitutions should besupported by all <code>strftime(3)</code> implementations, seethe <code>strftime(3)</code> man page for library-specificextensions.</p><table class="bordered"><tr><td><code>%A</code></td><td>full weekday name (localized)</td></tr><tr class="odd"><td><code>%a</code></td><td>3-character weekday name (localized)</td></tr><tr><td><code>%B</code></td><td>full month name (localized)</td></tr><tr class="odd"><td><code>%b</code></td><td>3-character month name (localized)</td></tr><tr><td><code>%c</code></td><td>date and time (localized)</td></tr><tr class="odd"><td><code>%d</code></td><td>2-digit day of month</td></tr><tr><td><code>%H</code></td><td>2-digit hour (24 hour clock)</td></tr><tr class="odd"><td><code>%I</code></td><td>2-digit hour (12 hour clock)</td></tr><tr><td><code>%j</code></td><td>3-digit day of year</td></tr><tr class="odd"><td><code>%M</code></td><td>2-digit minute</td></tr><tr><td><code>%m</code></td><td>2-digit month</td></tr><tr class="odd"><td><code>%p</code></td><td>am/pm of 12 hour clock (localized)</td></tr><tr><td><code>%S</code></td><td>2-digit second</td></tr><tr class="odd"><td><code>%U</code></td><td>2-digit week of year (Sunday first day of week)</td></tr><tr><td><code>%W</code></td><td>2-digit week of year (Monday first day of week)</td></tr><tr class="odd"><td><code>%w</code></td><td>1-digit weekday (Sunday first day of week)</td></tr><tr><td><code>%X</code></td><td>time (localized)</td></tr><tr class="odd"><td><code>%x</code></td><td>date (localized)</td></tr><tr><td><code>%Y</code></td><td>4-digit year</td></tr><tr class="odd"><td><code>%y</code></td><td>2-digit year</td></tr><tr><td><code>%Z</code></td><td>time zone name</td></tr><tr class="odd"><td><code>%%</code></td><td>literal `%'</td></tr></table></div></div><div class="bottomlang"><p><span>Available Languages: </span><a href="../en/programs/rotatelogs.html" title="English"> en </a> |<a href="../ko/programs/rotatelogs.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p></div><div id="footer"><p class="apache">Copyright 2008 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p><p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div></body></html>⌨️ 快捷键说明
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