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<title>s6: the s6-svdt program</title>
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<p>
<a href="index.html">s6</a><br />
<a href="//skarnet.org/software/">Software</a><br />
<a href="//skarnet.org/">skarnet.org</a>
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<h1> The s6-svdt program </h1>
<p>
s6-svstat prints the recorded death tally of a service, i.e. a list of the times
the process died, with the cause of death.
</p>
<h2> Interface </h2>
<pre>
s6-svdt [ -S | -s ] [ -n <em>maxlines</em> ] <em>servicedir</em>
</pre>
<p>
s6-svdt prints the contents of the recorded death tally of the service being
currently supervised at the <em>servicedir</em>
<a href="servicedir.html">service directory</a>, then exits 0.
</p>
<p>
For each recorded death, s6-svdt prints one line. This line contains the
following fields, separated with spaces:
</p>
<ul>
<li> A <a href="https://cr.yp.to/daemontools/tai64n.html">TAI64N</a>
timestamp .</li>
<li> The word "signal" if the death was caused by a signal, or the word
"exitcode" if the death was a normal exit. </li>
<li> The name of the signal that caused the death, or the exit code
of the process. </li>
<h2> Options </h2>
<ul>
<li> <tt>-S</tt> : print signal names. This is the default. </li>
<li> <tt>-s</tt> : print signal numbers. The numerical value of the signal
will be printed instead of the signal name. </li>
<li> <tt>-n <em>maxlines</em></tt> : limit the output to at most
the latest <em>maxlines</em> deaths. </li>
</ul>
<h2> Exit codes </h2>
<ul>
<li> 0: success </li>
<li> 100: wrong usage </li>
<li> 111: system call failed </li>
</ul>
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