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From: rhartman@thestepchild.sgi.com (Robert Hartman)
Newsgroups: comp.unix.shell
Subject: Re: Removing environment strings in C shell
Summary: unsetenv
Keywords: unset remove environment csh
Message-ID: <1991May10.171516.26703@odin.corp.sgi.com>
Date: 10 May 91 17:15:16 GMT
References: <9105091222.aa05720@art-sy.detroit.mi.us>
Sender: news@odin.corp.sgi.com (Net News)
Organization: Silicon Graphics, Inc., Mountain View, CA
Lines: 13

In article <9105091222.aa05720@art-sy.detroit.mi.us> chap@art-sy.detroit.mi.us (j chapman flack) writes:
>In the Bourne shell, the sequence of commands
>
>     export KILLIT
>     unset  KILLIT
>
>will remove KILLIT from the shell's environment altogether. ...

In the C shell you'd say: 

	unsetenv KILLIT

-r