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<title>s6-rc: the s6-rc-dryrun program</title>
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<p>
<a href="index.html">s6-rc</a><br />
<a href="http://skarnet.org/software/">Software</a><br />
<a href="http://skarnet.org/">skarnet.org</a>
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<h1> The s6-rc-dryrun internal program </h1>
<p>
s6-rc-dryrun is a command wrapper and nullifier, roughly
equivalent to the Unix <tt>echo</tt> command. When run, it
simply prints its arguments to stdout.
</p>
<p>
s6-rc-dryrun is not meant to be used directly; it is
internally called by
<a href="s6-rc.html">s6-rc</a> when given the <tt>-n</tt>
option. When a dry-running s6-rc instance wants to change the
system state by spawning a command <tt><em>cmd</em></tt>, it spawns
<tt>s6-rc-dryrun <em>cmd</em></tt> instead, which allows the user
to see what would have been done without actually running the
command.
</p>
<h2> Interface </h2>
<pre>
s6-rc-dryrun [ -v <em>verbosity</em> ] [ -t <em>timeout</em> ] <em>cmd...</em>
</pre>
<ul>
<li> s6-rc-dryrun prints its name, a colon, a space, and
the space-separated list of its arguments to stdout. </li>
<li> It then waits for <em>timeout</em> milliseconds, then
exits 0. </li>
</ul>
<h2> Options </h2>
<ul>
<li> <tt>-v <em>verbosity</em></tt> : if <em>verbosity</em>
is 0, s6-rc-dryrun will not print anything to stdout. Default is 1. </li>
<li> <tt>-t <em>timeout</em></tt> : sleep for <em>timeout</em>
milliseconds before exiting. Default is 1000, but when invoked by
<a href="s6-rc.html">s6-rc</a>, it will be the value of the
<em>dryruntimeout</em> argument to the <tt>-n</tt> option. This is
used to simulate a non-immediate startup or shutdown script. </li>
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