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+<html>
+ <head>
+ <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+ <meta http-equiv="Content-Language" content="en" />
+ <title>execline: the fdmove program</title>
+ <meta name="Description" content="execline: the fdmove program" />
+ <meta name="Keywords" content="execline command fdmove file descriptor dup dup2" />
+ <!-- <link rel="stylesheet" type="text/css" href="http://skarnet.org/default.css" /> -->
+ </head>
+<body>
+
+<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>fdmove</tt> program </h1>
+
+<p>
+<tt>fdmove</tt> moves or copies a given file descriptor, then
+executes a program.
+</p>
+
+<h2> Interface </h2>
+
+<pre>
+ fdmove [ -c ] <em>fdto</em> <em>fdfrom</em> <em>prog...</em>
+</pre>
+
+<p>
+<tt>fdmove</tt> moves the file descriptor number <em>fdfrom</em>,
+to number <em>fdto</em>, then execs into <em>prog</em> with its arguments.
+If <em>fdto</em> is open, <tt>fdmove</tt> closes it before moving
+<em>fdfrom</em> to it.
+</p>
+
+<h2> Options </h2>
+
+<ul>
+ <li> <tt>-c</tt>&nbsp;: duplicate <em>fdfrom</em> to <em>fdto</em>
+instead of moving it; do not close <em>fdfrom</em>. </li>
+</ul>
+
+<h2> Notes </h2>
+
+<ul>
+ <li> <tt>fdmove -c <em>a</em> <em>b</em> prog...</tt> is roughly equivalent to
+<tt>sh -c 'exec prog... <em>a</em>&gt;&amp;<em>b</em>'</tt></li>
+ <li> <tt>fdmove <em>a</em> <em>b</em> prog...</tt> is roughly equivalent to
+<tt>sh -c 'exec prog... <em>a</em>&gt;&amp;<em>b</em> <em>b</em>&lt;&amp;-'</tt></li>
+</ul>
+
+</body>
+</html>