81 lines
1.9 KiB
HTML
81 lines
1.9 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>unset - Unset values of variables and functions</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>unset - Unset values of variables and functions</h2>
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<strong>Synopsis</strong>
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<p><strong>unset</strong> [ <strong>-fv</strong> ] [ <em>name</em>
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... ]</p>
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<p><strong>Description</strong></p>
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<p>You can use <strong>unset</strong> to unset each variable or
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function specified by name. If no option is specified, <em>
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name</em> refers to a variable. Variables with the read-only
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attribute cannot be unset.</p>
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<p><strong>Options</strong></p>
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<dl>
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<dt><strong>-f</strong></dt>
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<dd><em>name</em> refers to a function.</dd>
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<dt><strong>-v</strong></dt>
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<dd><em>name</em> refers to a variable.</dd>
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</dl>
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<p><strong>Operands</strong></p>
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<p>Each <em>name</em> is a variable or function.</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 at least one <em>name</em> could not be found. The
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value is the number of <em>names</em> that are not found.</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="export.htm">export - Set export attribute for
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variables</a></li>
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<li><a href="local.htm">local - Assign a local variable in a
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function</a></li>
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<li><a href="readonly.htm">readonly - Set read-only attribute for
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variables</a></li>
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<li><a href="set.htm">set - Set or unset options and positional
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parameters</a></li>
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</ul>
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<strong>Examples</strong>
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<ol>
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<li>Unset the variable alpha: unset alpha</li>
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<li>Unset the function foo: unset -f foo</li>
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</ol>
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</body>
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</html>
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