102 lines
2.7 KiB
HTML
102 lines
2.7 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<html>
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<head>
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<meta name="generator" content="HTML Tidy, see www.w3.org">
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<meta http-equiv="Content-Type" content=
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"text/html; charset=utf-8">
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<title>command - Run a smiple command</title>
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<LINK rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</HEAD>
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<body bgcolor="#FFFFFF">
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<!-- Java sync-link -->
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<SCRIPT LANGUAGE="Javascript" SRC="../rzahg/synch.js" TYPE="text/javascript"></SCRIPT>
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<h2>command - Run a simple command</h2>
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<strong>Synopsis</strong>
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<p><strong>command</strong> [ <strong>-p</strong> ] <em>
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command_name</em> [ <em>argument</em> ... ]</p>
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<p><strong>command</strong> [ <strong>-vV</strong> ] <em>
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command_name</em></p>
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<p><strong>Description</strong></p>
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<p>You can use <strong>command</strong> to run <em>
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command_name</em> with the specified <em>arguments</em> with
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functions eliminated from the search order. If <em>
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command_name</em> is a special built-in utility, then it is treated
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as a regular built-in utility. Otherwise, the effect of <strong>
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command</strong> is the same as omitting <strong>
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command</strong>.</p>
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<p>Note that <strong>command -v</strong> is equivalent to <strong>
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whence</strong> and <strong>command -V</strong> is equivalent to
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<strong>whence -v</strong>.</p>
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<p><strong>Options</strong></p>
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<dl>
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<dt><strong>-p</strong></dt>
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<dd>Perform the command search using a default value for the
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<strong>PATH</strong> variable that is guaranteed to find all of
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the standard utilities.</dd>
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<dt><strong>-v</strong></dt>
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<dd>Write a string that shows the path name or command used by
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<strong>qsh</strong> to invoke <em>command_name</em> in the current
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environment.</dd>
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<dt><strong>-V</strong></dt>
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<dd>Write a string that shows how <em>command_name</em> is
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interpreted by <strong>qsh</strong> in the current
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environment.</dd>
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</dl>
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<p><strong>Operands</strong></p>
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<p><em>command_name</em> is a utility in the current
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environment.</p>
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<p><strong>Exit Status</strong></p>
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<ul>
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<li>0 when successful.</li>
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<li>>0 when unsuccessful.</li>
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</ul>
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<p><strong>Related information</strong></p>
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<ul>
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<li><a href="dot.htm">dot (.) - Run commands in current
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environment</a></li>
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<li><a href="eval.htm">eval - Construct command by concatenating
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arguments</a></li>
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<li><a href="whence.htm">whence - Find type of command</a></li>
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</ul>
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<strong>Examples</strong>
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<ol>
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<li>Run the export special built-in utility as a regular built-in
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utility: <strong>command</strong> export ALPHA</li>
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<li>Display the path name used to invoke the ls utility: <strong>
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command</strong> -v ls</li>
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<li>Display how the reserved word for is interpreted: <strong>
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command</strong> -V for</li>
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</ol>
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</body>
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</html>
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