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