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<title>execline: the define command</title>
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<p>
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<h1> The <tt>define</tt> program </h1>
<p>
<tt>define</tt> replaces a literal with a value, then executes
another program.
</p>
<h2> Interface </h2>
<pre>
define [ -s ] [ -C | -c ] [ -N | -n ] [ -d <em>delim</em> ] <em>variable</em> <em>value</em> <em>prog...</em>
</pre>
<ul>
<li> <tt>define</tt> performs
<a href="el_substitute.html">variable substitution</a> on
<em>prog...</em>, using <em>variable</em> as key and
<em>value</em> as value.
<tt>define</tt>'s options are used to <a href="el_transform.html">control
the substitution mechanism</a>. </li>
<li> <tt>define</tt> then execs into the modified <em>prog...</em>. </li>
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