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<title>s6-linux-utils: the s6-reboot program</title>
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<h1> The <tt>s6-reboot</tt> program </h1>
<p>
<tt>s6-reboot</tt> sends a signal to process 1 in order to reboot the machine;
or, with the <tt>-f</tt> option, it performs an immediate reboot.
</p>
<h2> Interface </h2>
<pre>
s6-reboot [ -h | -p | -r ] [ -f ]
</pre>
<ul>
<li> s6-reboot sends a signal to process 1. </li>
<li> It then exits 0. </li>
</ul>
<h2> Options </h2>
<ul>
<li> <tt>-h</tt> : halt. The command will order a halt (i.e. the system will
be shut down, but the power will remain up), which means
sending a SIGUSR2 to process 1. </li>
<li> <tt>-p</tt> : poweroff. The command will order a power off, which means
sending a SIGUSR1 to process 1. </li>
<li> <tt>-r</tt> : reboot. The command will order a reboot, which means
sending a SIGINT to process 1. This is the default. </li>
<li> <tt>-f</tt> : force. The command will not send any signal to process 1;
it will just sync the filesystems then tell the kernel to halt, poweroff or reboot.
<tt>s6-reboot -f</tt> or <tt>s6-poweroff -f</tt> should be the last program
executed in the lifetime of a machine, at the end of the shutdown script called
by process 1 when it receives a signal telling it to shut down. </li>
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