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<title>s6-linux-init - tools for a Linux init system</title>
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<p>
<a href="//skarnet.org/software/">Software</a><br />
<a href="//skarnet.org/">skarnet.org</a>
</p>
<h1> s6-linux-init </h1>
<h2> What is it ? </h2>
<p>
s6-linux-init is a set of minimalistic tools to create a
<a href="//skarnet.org/software/s6/">s6</a>-based init
system, including a <tt>/sbin/init</tt> binary, on a Linux kernel.
</p>
<p>
s6-linux-init is meant to automate creation of scripts revolving
around the use of other skarnet.org tools, especially s6, in order
to provide a complete booting environment with integrated supervision
and logging without having to hand-craft all the details.
</p>
<p>
Please read the documentation for the
<a href="s6-linux-init-maker.html">s6-linux-init-maker</a> program
carefully, but if you're impatient, you can also read this
<a href="quickstart.html">quickstart guide</a>, which includes
a small FAQ.
</p>
<hr />
<h2> Installation </h2>
<h3> Requirements </h3>
<ul>
<li> A Linux-based system with a standard C development environment </li>
<li> GNU make, version 3.81 or later </li>
<li> <a href="//skarnet.org/software/skalibs/">skalibs</a> version
2.6.0.0 or later </li>
<li> <a href="//skarnet.org/software/execline/">execline</a> version
2.3.0.2 or later </li>
<li> <a href="//skarnet.org/software/s6-portable-utils/">s6-portable-utils</a> version
2.2.1.1 or later </li>
<li> <a href="//skarnet.org/software/s6-linux-utils/">s6-linux-utils</a> version
2.4.0.0 or later </li>
<li> <a href="//skarnet.org/software/s6/">s6</a> version
2.6.1.0 or later </li>
</ul>
<p>
When you <em>build</em> s6-linux-init, the
<a href="s6-linux-init-maker.html">s6-linux-init-maker</a> tool
is created (as well as the shutdown commands);
then you <em>run</em> that tool to create an init script,
and then you can <em>boot</em> your system on that init script.
</p>
<p>
skalibs is a <em>build-time</em> dependency. If you are linking binaries
against the shared version of the skalibs library, it also becomes a
<em>run-time</em> and <em>boot-time</em> dependency. <br />
All the other listed packages are <em>boot-time</em> dependencies only.
</p>
<h3> Licensing </h3>
<p>
s6-linux-init is free software. It is available under the
<a href="http://opensource.org/licenses/ISC">ISC license</a>.
</p>
<h3> Download </h3>
<ul>
<li> The current released version of s6-linux-init is
<a href="s6-linux-init-0.3.1.1.tar.gz">0.3.1.1</a>. </li>
<li> Alternatively, you can checkout a copy of the
<a href="//git.skarnet.org/cgi-bin/cgit.cgi/s6-linux-init/">s6-linux-init
git repository</a>:
<pre> git clone git://git.skarnet.org/s6-linux-init </pre> </li>
<li> There's also a
<a href="https://github.com/skarnet/s6-linux-init">GitHub mirror</a>
of the s6-linux-init git repository. </li>
</ul>
<h3> Compilation </h3>
<ul>
<li> See the enclosed INSTALL file for installation details. </li>
</ul>
<h3> Upgrade notes </h3>
<ul>
<li> <a href="upgrade.html">This page</a> lists the differences to be aware of between
the previous versions of s6-linux-init and the current one. </li>
</ul>
<hr />
<h2> Reference </h2>
<h3> Commands </h3>
<p>
All these commands exit 111 if they encounter a temporary error, and
100 if they encounter a permanent error - such as a misuse.
</p>
<ul>
<li><a href="s6-linux-init-maker.html">The <tt>s6-linux-init-maker</tt> program</a></li>
<li><a href="s6-halt.html">The <tt>s6-halt</tt> program</a></li>
<li><a href="s6-poweroff.html">The <tt>s6-poweroff</tt> program</a></li>
<li><a href="s6-reboot.html">The <tt>s6-reboot</tt> program</a></li>
</ul>
<h2> Related resources </h2>
<ul>
<li> <tt>s6-linux-init</tt> is discussed on the
<a href="//skarnet.org/lists.html#skaware">skaware</a> mailing-list. </li>
<li> There is a <tt>#s6</tt> IRC channel on Freenode. Sometimes people
are there and even answer questions. </li>
</ul>
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