62 lines
1.8 KiB
HTML
62 lines
1.8 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>getopts - Parse utility options</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>getopts - Parse utility options</h2>
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<strong>Synopsis</strong>
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<p><strong>getopts</strong> <em>optstring varname</em></p>
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<p><strong>Description</strong></p>
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<p>You can use <strong>getopts</strong> to check the positional
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parameters for legal options. An option argument begins with a
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minus (<strong>-</strong>). The end of the the options is marked by
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the first argument that does not begin with a minus or an argument
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of <strong>--</strong>.</p>
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<p>Each time you call <strong>getopts</strong>, it places the next
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option letter it finds in <em>varname</em>. <strong>qsh</strong>
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stores the index of the next parameter to be processed in the
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variable <strong>OPTIND</strong>. When an option requires an
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argument, <strong>qsh</strong> stores the argument in the variable
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<strong>OPTARG</strong>.</p>
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<p><strong>Options</strong></p>
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<p>None.</p>
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<p><strong>Operands</strong></p>
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<p>The option letters recognized by <strong>getopts</strong> are
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identified in <em>optstring</em>. If a letter is followed by a
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colon (<strong>:</strong>), that option is expected to have an
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argument. The argument can be separated from the option letter by
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<space>s.</p>
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<p>With each call to <strong>getopts</strong>, <em>varname</em> is
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updated with the option letter.</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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</body>
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</html>
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