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<title>s6-frontend: the s6 system command</title>
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<p>
<a href="s6.html">The s6 command</a><br />
<a href="index.html">s6-frontend</a><br />
<a href="//skarnet.org/software/">Software</a><br />
<a href="//skarnet.org/">skarnet.org</a>
</p>
<h1> The <tt>s6 system</tt> command </h1>
<p>
<tt>s6 system</tt> regroups actions related to booting or shutting down
the system.
</p>
<div id="interface">
<h2> Interface </h2>
</div>
<pre>
s6 system <em>subcommand</em>
</pre>
<ul>
<li> No subcommand takes any options. </li>
</ul>
<div id="subcommands">
<h2> Subcommands </h2>
</div>
<div id="help">
<h3> help </h3>
</div>
<p>
<tt>s6 system help</tt> prints a short help message summarizing the options
and usage of the <tt>s6 system</tt> command. It is not as detailed as this page.
</p>
<div id="boot">
<h3> boot </h3>
</div>
<h4> Interface </h4>
<pre>
s6 system boot
</pre>
<ul>
<li> <tt>s6 system boot</tt> initializes the live directory for s6-rc
then starts all the services defined in the default bundle. In other
words, it brings the system from a state where nothing is running to
a state where everything the user wants is running. </li>
<li> This is the command that should be called as soon as the init
program hands off duties.
<ul>
<li> On a system making use of
<a href="//skarnet.org/software/s6-linux-init/">s6-linux-init/a>,
<tt>s6 system boot</tt> should be the sole command defined in the
<tt>/etc/rc.init</tt> script. </li>
<li> On a system using <tt>/etc/inittab</tt>, the first line
of the inittab should be: <tt>::wait:/usr/bin/s6 system boot</tt> </li>
</ul> </li>
</ul>
<p>
The rest of the subcommands are shutdown subcommands, and they
only work if the machine makes use of
<a href="//skarnet.org/software/s6-linux-init/">s6-linux-init/a> and
s6-frontend has been configured to support it. On a machine that
does not boot via s6-linux-init, a shutdown should be executed via
the shutdown commands provided by your init system. In order for
the shutdown to be clean, the <code>s6 live stop_everything -E</code>
should be run before the init system performs a hard shutdown. For
instance, if the system uses <tt>/etc/inittab</tt>, then the
following line should appear in <tt>/etc/inittab</tt>:
<code>::shutdown:/usr/bin/s6 live stop_everything -E</code>
</p>
<div id="reboot">
<h3> reboot </h3>
</div>
<h4> Interface </h4>
<pre>
s6 system reboot
</pre>
<ul>
<li> <tt>s6 system reboot</tt> reboots the machine.
<li> This only works if the machine makes use of
<a href="//skarnet.org/software/s6-linux-init/">s6-linux-init/a> and
s6-frontend has been configured to support it. </li>
</ul>
<div id="poweroff">
<h3> poweroff </h3>
</div>
<h4> Interface </h4>
<pre>
s6 system poweroff
</pre>
<ul>
<li> <tt>s6 system poweroff</tt> halts the system and turns the
power off. </li>
<li> This only works if the machine makes use of
<a href="//skarnet.org/software/s6-linux-init/">s6-linux-init/a> and
s6-frontend has been configured to support it. </li>
</ul>
<div id="halt">
<h3> halt </h3>
</div>
<h4> Interface </h4>
<pre>
s6 system halt
</pre>
<ul>
<li> <tt>s6 system halt</tt> halts the system without turning
the power off. </li>
<li> This only works if the machine makes use of
<a href="//skarnet.org/software/s6-linux-init/">s6-linux-init/a> and
s6-frontend has been configured to support it. </li>
</ul>
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