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<title>execline: the fdswap program</title>
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<meta name="Keywords" content="execline command fdswap file descriptor dup dup2" />
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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>
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<h1> The <tt>fdswap</tt> program </h1>
<p>
<tt>fdswap</tt> swaps two file descriptors, then
executes a program.
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<h2> Interface </h2>
<pre>
fdswap <em>fd1</em> <em>fd2</em> <em>prog...</em>
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<p>
<tt>fdswaps</tt> swaps file descriptors numbered <em>fd1</em> and
<em>fd2</em>, then execs into <em>prog</em> with its arguments.
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<h2> Notes </h2>
<ul>
<li> fdswap has no portable shell equivalent. </li>
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