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-
- <manualpage metafile="rotatelogs.xml.meta">
- <parentdocument href="./">Programs</parentdocument>
-
- <title>rotatelogs - Piped logging program to rotate Apache logs</title>
-
- <summary>
- <p><code>rotatelogs</code> is a simple program for use in
- conjunction with Apache's piped logfile feature. For example:</p>
-
- <example>
- CustomLog "|bin/rotatelogs /var/logs/logfile 86400" common
- </example>
-
- <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>
-
- <example>
- CustomLog "|bin/rotatelogs /var/logs/logfile 5M" common
- </example>
-
- <p>This configuration will rotate the logfile whenever it reaches
- a size of 5 megabytes.</p>
-
- <example>
- ErrorLog "|bin/rotatelogs /var/logs/errorlog.%Y-%m-%d-%H_%M_%S 5M"
- </example>
- <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>
-
- </summary>
-
- <section id="synopsis"><title>Synopsis</title>
-
- <p><code><strong>rotatelogs</strong>
- [ -<strong>l</strong> ]
- <var>logfile</var>
- [ <var>rotationtime</var> [ <var>offset</var> ]] |
- [ <var>filesize</var>M ]</code></p>
- </section>
-
- <section id="options"><title>Options</title>
-
- <dl>
-
- <dt><code>-l</code> (<em>2.0.51 and later</em>)</dt>
- <dd>Causes the use of local time rather than GMT as the base for the
- interval. Note that using <code>-l</code> in an environment which changes the
- GMT offset (such as for BST or DST) can lead to unpredictable results!</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 in
- seconds. Both formats compute the start time from the beginning of
- the current period.</dd>
-
- <dt><code><var>rotationtime</var></code></dt>
-
- <dd>The time between log file rotations in seconds.</dd>
-
- <dt><code><var>offset</var></code></dt>
-
- <dd>The number of minutes offset from UTC. If omitted, zero is
- assumed and UTC is used. For example, to use local time in the zone
- UTC -5 hours, specify a value of <code>-300</code> for this argument.</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. Use this parameter
- in place of both rotationtime and offset.</dd>
- </dl>
- </section>
-
- <section id="portability"><title>Portability</title>
-
- <p>The following logfile format string substitutions should be
- supported by all <code>strftime(3)</code> implementations, see
- the <code>strftime(3)</code> man page for library-specific
- extensions.</p>
-
- <table border="1" style="zebra">
- <tr><td><code>%A</code></td><td>full weekday name (localized)</td></tr>
- <tr><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><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><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><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><td><code>%M</code></td><td>2-digit minute</td></tr>
- <tr><td><code>%m</code></td><td>2-digit month</td></tr>
- <tr><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><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><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><td><code>%x</code></td><td>date (localized)</td></tr>
- <tr><td><code>%Y</code></td><td>4-digit year</td></tr>
- <tr><td><code>%y</code></td><td>2-digit year</td></tr>
- <tr><td><code>%Z</code></td><td>time zone name</td></tr>
- <tr><td><code>%%</code></td><td>literal `%'</td></tr>
- </table>
-
- </section>
- </manualpage>
-