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<title>s6: the s6-fdholder-list program</title>
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<p>
<a href="index.html">s6</a><br />
<a href="//skarnet.org/software/">Software</a><br />
<a href="//skarnet.org/">skarnet.org</a>
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<h1> The <tt>s6-fdholder-list</tt> program </h1>
<p>
<tt>s6-fdholder-list</tt> lists the descriptors currently held by a
<a href="s6-fdholderd.html">fd-holding daemon</a>.
</p>
<h2> Interface </h2>
<pre>
s6-fdholder-list [ -t <em>timeout</em> ] <em>path</em>
</pre>
<ul>
<li> s6-fdholder-list executes into <tt><a href="s6-ipcclient.html">s6-ipcclient</a> <em>path</em>
<a href="s6-fdholder-listc.html">s6-fdholder-listc</a> <em>id</em></tt>. It does nothing else: it is just a
convenience program. The <a href="s6-ipcclient.html">s6-ipcclient</a> program connects
to a Unix socket at <em>path</em>, and the
<a href="s6-fdholder-listc.html">s6-fdholder-listc</a> program transmits
the instruction over the socket, and gets and prints the result. </li>
</ul>
<h2> Options </h2>
<ul>
<li> <tt>-t <em>timeout</em></tt> : if the operation cannot be
processed in <em>timeout</em> milliseconds, then fail with an error message.
Communications with the server should be near-instant, so this option is
only here to protect users against programming errors (connecting to the
wrong socket, for instance). </li>
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