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<title>htcacheclean - Clean up the disk cache - Apache HTTP Server</title>
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<p class="apache">Apache HTTP Server Version 2.1</p>
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<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs-project/">Documentation</a> > <a href="../">Version 2.1</a> > <a href="./">Programs</a></div><div id="page-content"><div id="preamble"><h1>htcacheclean - Clean up the disk cache</h1>
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<p><span>Available Languages: </span><a href="/en/programs/htcacheclean.html" title="English"> en </a> |
<a href="/ko/programs/htcacheclean.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
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<p><code>htcacheclean</code> is used to keep the size of
<code class="module"><a href="/mod/mod_disk_cache.html">mod_disk_cache</a></code>'s storage within a certain limit. This
tool can run either manually or in daemon mode. When running in
daemon mode, it sleeps in the background and checks the cache directories
at regular intervals for cached content to be removed. You can stop the daemon
cleanly by sending it a TERM or INT signal.</p>
</div>
<div id="quickview"><ul id="toc"><li><img alt="" src="/images/down.gif" /> <a href="#synopsis">Synopsis</a></li>
</ul><h3>See also</h3><ul class="seealso"><li><code class="module"><a href="/mod/mod_disk_cache.html">mod_disk_cache</a></code></li></ul></div>
<div class="section">
<h2><a name="synopsis" id="synopsis">Synopsis</a></h2>
<p><code><strong>htcacheclean</strong>
[ -<strong>D</strong> ]
[ -<strong>v</strong> ]
[ -<strong>r</strong> ]
[ -<strong>n</strong> ]
-<strong>p</strong><var>path</var>
-<strong>l</strong><var>limit</var></code></p>
<p><code><strong>htcacheclean</strong> -<strong>b</strong>
[ -<strong>n</strong> ]
[ -<strong>i</strong> ]
-<strong>d</strong><var>interval</var>
-<strong>p</strong><var>path</var>
-<strong>l</strong><var>limit</var></code></p>
<div class="section">
<h2><a name="options" id="options">Options</a></h2>
<dl>
<dt><code>-d<var>interval</var></code></dt>
<dd>Daemonize and repeat cache cleaning every <var>interval</var> minutes.
This option is mutually exclusive with the <code>-D</code>, <code>-v</code>
and <code>-r</code> options. To shutdown the daemon cleanly, just send it
a <code>SIGTERM</code> or <code>SIGINT</code>.</dd>
<dt><code>-D</code></dt>
<dd>Do a dry run and don't delete anything. This option is mutually
exclusive with the <code>-d</code> option.</dd>
<dt><code>-v</code></dt>
<dd>Be verbose and print statistics. This option is mutually exclusive
with the <code>-d</code> option.</dd>
<dt><code>-r</code></dt>
<dd>Clean thoroughly. This assumes that the Apache web server is
not running (otherwise you may get garbage in the cache). This option
is mutually exclusive with the <code>-d</code> option.</dd>
<dt><code>-n</code></dt>
<dd>Be nice. This causes slower processing in favour of other
processes. <code>htcacheclean</code> will sleep from time to time
so that (a) the disk IO will be delayed and (b) the kernel can schedule
other processes in the meantime.</dd>
<dt><code>-p<var>path</var></code></dt>
<dd>Specify <var>path</var> as the root directory of the disk cache. This
should be the same value as specified with the <code class="directive"><a href="/mod/mod_disk_cache.html#cacheroot">CacheRoot</a></code> directive.</dd>
<dt><code>-l<var>limit</var></code></dt>
<dd>Specify <var>limit</var> as the total disk cache size limit. The value
is expressed in bytes by default (or attaching <code>B</code> to the
number). Attach <code>K</code> for Kbytes or <code>M</code> for
MBytes.</dd>
<dt><code>-i</code></dt>
<dd>Be intelligent and run only when there was a modification of the disk
cache. This option is only possible together with the <code>-d</code>
option.</dd>
</dl>
<div class="section">
<h2><a name="exit" id="exit">Exit Status</a></h2>
<p><code>htcacheclean</code> returns a zero status ("true") if all
operations were successful, <code>1</code> otherwise.</p>
</div></div>
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