<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 and implies
the <code>-t</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>-t</code></dt>
<dd>Delete all empty directories. By default only cache files are
removed, however with some configurations the large number of
directories created may require attention. If your configuration
requires a very large number of directories, to the point that
inode or file allocation table exhaustion may become an issue, use
of this option is advised.</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>
<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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