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From: tim@callan.UUCP (Tim Smith)
Newsgroups: net.unix-wizards
Subject: Re: magic numbers and setuid shell scripts
Message-ID: <136@callan.UUCP>
Date: Fri, 30-Mar-84 18:28:18 EST
Article-I.D.: callan.136
Posted: Fri Mar 30 18:28:18 1984
Date-Received: Fri, 6-Apr-84 00:41:28 EST
Organization: Callan Data Systems, Westlake Village, CA
Lines: 13

#!/dev/person/you

  Setuid Bourne shell scripts may protect themselves against
strange values of IFS by starting out with the line

	IFS=

This will work even if IFS is set to something like `I' or `F'
because the shell does blank interpretation after it does
variable assignments and substitutions.

				Tim Smith
	   {decvax,ucbvax}!ihnp4!sdcrdcf!trwrb!wlbr!callan!tim