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<title>execline: the wait command</title>
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<p>
<a href="index.html">execline</a><br />
<a href="http://skarnet.org/software/">Software</a><br />
<a href="http://skarnet.org/">skarnet.org</a>
</p>
<h1> The <tt>wait</tt> program </h1>
<p>
<tt>wait</tt> waits for a set of children, then executes a program.
</p>
<h2> Interface </h2>
<p>
In an <a href="execlineb.html">execlineb</a> script:
</p>
<pre>
wait [ -r ] { [ <em>pids...</em> ] } <em>prog...</em>
</pre>
<ul>
<li> <tt>wait</tt> reads a list of <em>pids</em> in a
(possibly empty) <a href="el_semicolon.html">block</a>,
and unquotes it. </li>
<li> <tt>wait</tt> waits for every child whose pid is
listed in <em>pids...</em>. If <em>pids...</em> is an
empty list, it waits for every child process it has. </li>
<li><tt>wait</tt> then execs into <em>prog...</em>. </li>
</ul>
<h2> Options </h2>
<ul>
<li> <tt>-r</tt> : reap mode. Do not pause until a child has
exited; only reap all pending zombies. The read block must be empty
for that option to be effective. </li>
</ul>
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