58 lines
1.4 KiB
HTML
58 lines
1.4 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>Case 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>Case command</h2>
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<p>The syntax of the <strong>case</strong> command is</p>
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<p><strong>case</strong> <em>word</em> <strong>in</strong></p>
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<p><em>pattern1</em> ) <em>list1</em> ;;</p>
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<p><em>pattern2</em> | <em>pattern3</em> ) <em>list2</em> ;;</p>
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<p>...</p>
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<p><strong>esac</strong></p>
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<p><strong>qsh</strong> expands each <em>pattern</em> in turn and
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sees if it matches the expansion of <em>word</em>. When there is a
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match, <strong>qsh</strong> runs the corresponding <em>list</em>.
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After the first match, no more patterns are expanded. See <a href=
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"pattern.htm">"Shell Patterns"</a> for more details on
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patterns.</p>
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<p><strong>Examples</strong></p>
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<ol>
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<li>A case command for processing command line options.
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<pre>
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while getopts ap:t: c ; do
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case $c in
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a) aflag=1;;
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p) pflag=1
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path=$OPTARG;;
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t) time=$OPTARG;;
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*) print -u2 "Invalid option"
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exit 1;;
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esac
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done
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</pre>
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</li>
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</ol>
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</body>
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</html>
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