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<title>s6-portable-utils: the s6-nuke program</title>
<meta name="Description" content="s6-portable-utils: the s6-nuke program" />
<meta name="Keywords" content="s6-portable-utils command s6-nuke signal kill" />
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<p>
<a href="index.html">s6-portable-utils</a><br />
<a href="http://skarnet.org/software/">Software</a><br />
<a href="http://skarnet.org/">skarnet.org</a>
</p>
<h1> The <tt>s6-nuke</tt> program </h1>
<p>
s6-nuke sends signals to every process it is allowed to send.
</p>
<h2> Interface </h2>
<pre>
s6-nuke [ -h | -t | -k ]
</pre>
<ul>
<li> Depending on the options it is given, s6-nuke sends signals to
all processes; depending on s6-nuke's rights, not all processes may
receive them. </li>
<li> s6-nuke protects itself against the signals it sends (which
doesn't do much good against SIGKILL). If it survives the blast,
it exits 0. </li>
</ul>
<h2> Options </h2>
<ul>
<li> <tt>-h</tt> : send a SIGHUP </li>
<li> <tt>-t</tt> : send a SIGTERM then a SIGCONT </li>
<li> <tt>-k</tt> : send a SIGKILL </li>
</ul>
<h2> Usage notes </h2>
<p>
s6-nuke can be used during the shutdown procedure of a system, which is
described
<a href="http://skarnet.org/software/s6/s6-svscan-1.html#stage3">here</a>.
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