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<title>s6-linux-init: the s6-linux-init-shutdown program</title>
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<p>
<a href="index.html">s6-linux-init</a><br />
<a href="//skarnet.org/software/">Software</a><br />
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<h1> The <tt>s6-linux-init-shutdown</tt> program </h1>
<p>
<tt>s6-linux-init-shutdown</tt> triggers the system shutdown procedure.
</p>
<h2> Interface </h2>
<pre>
s6-linux-init-shutdown [ -h | -p | -r | -k ] [ -a ] [ -t <em>sec</em> ] [ -f | -F ] [ -R <em>tmpfsdir</em> ] <em>time</em> [ <em>message</em> ]
s6-linux-init-shutdown -c [ -R <em>tmpfsdir</em> ] [ <em>message</em> ]
</pre>
<ul>
<li> If the <tt>-c</tt> option is present, a pending shutdown is cancelled. </li>
<li> Else, it triggers the shutdown procedure.
<li> It exits 0. The shutdown procedure happens asynchronously. </li>
</ul>
<p>
The <tt>s6-linux-init-shutdown</tt> program conforms to the LSB-3.0.0
<a href="https://refspecs.linuxfoundation.org/LSB_3.0.0/LSB-PDA/LSB-PDA.junk/shutdown.html">shutdown</a>
interface.
</p>
<h2> Exit codes </h2>
<ul>
<li> 0: shutdown procedure triggered. </li>
<li> 100: wrong usage, or user does not have root privileges. </li>
<li> 111: system call failed. </li>
</ul>
<h2> Supplementary options </h2>
<p>
These options are supported by <tt>s6-linux-init-shutdown</tt> but are not
part of the LSB-3.0.0 <tt>shutdown</tt> specification.
</p>
<ul>
<li> <tt>-R <em>tmpfsdir</em></tt> : assume that the root-only
boot-time tmpfs has been mounted on <em>tmpfsdir</em>. Default is <tt>/run</tt>.
The <tt>shutdown</tt> script created by a
<a href="s6-linux-init-maker.html">s6-linux-init-maker</a> invocation
automatically execs into <tt>s6-linux-init-shutdown</tt> with the correct
<tt>-R</tt> option. </li>
</ul>
<h2> Notes </h2>
<ul>
<li> The <a href="s6-linux-init-shutdown.html">s6-linux-init-shutdown</a>
binary is not meant to be called directly by administrators.
Instead, its purpose is to be used in a <tt>shutdown</tt> script created by
<a href="s6-linux-init-maker.html">s6-linux-init-maker</a>. </li>
</ul>
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