25 lines
1.2 KiB
HTML
25 lines
1.2 KiB
HTML
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<HTML><HEAD><TITLE>Built-In Commands - unset manual page</TITLE></HEAD><BODY>
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<H3><A NAME="M2">NAME</A></H3>
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unset - Delete variables
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<H3><A NAME="M3">SYNOPSIS</A></H3>
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<B>unset </B><I>name </I>?<I>name name ...</I>?<BR>
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<H3><A NAME="M4">DESCRIPTION</A></H3>
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This command removes one or more variables.
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Each <I>name</I> is a variable name, specified in any of the
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ways acceptable to the <B><A HREF="../TkCmd/set.htm">set</A></B> command.
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If a <I>name</I> refers to an element of an array then that
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element is removed without affecting the rest of the array.
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If a <I>name</I> consists of an array name with no parenthesized
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index, then the entire array is deleted.
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The <B>unset</B> command returns an empty string as result.
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An error occurs if any of the variables doesn't exist, and any variables
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after the non-existent one are not deleted.
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<H3><A NAME="M5">KEYWORDS</A></H3>
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<A href="../Keywords/R.htm#remove">remove</A>, <A href="../Keywords/V.htm#variable">variable</A>
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<HR><PRE>
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<A HREF="../copyright.htm">Copyright</A> © 1993 The Regents of the University of California.
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<A HREF="../copyright.htm">Copyright</A> © 1994-1996 Sun Microsystems, Inc.
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<A HREF="../copyright.htm">Copyright</A> © 1995-1997 Roger E. Critchlow Jr.</PRE>
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</BODY></HTML>
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