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Date:	Mon, 22 Feb 1993 10:37:57 -0500
From:	rsalz@osf.org
Message-Id: <9302221537.AA11536@earth.osf.org>
To:	rc@hawkwind.utcs.toronto.edu
Subject: Why featureful shells can be bad

Here's a fun story.  The machine rodan.uu.net is the central server
for internal stuff at UUNET; it's where staff gets their email,
has their homedirs, etc.  Well for some reason there was a file
/usr/spool/mqueue/=sendmail file, but no /usr/lib/sendmail.
Someone cp'd the latter, and tried to remove the former
	rm =sendmail
Well, in zsh "=foo" means "expand to the full path of the exectuable of foo.
Zap, away went /usr/lib/sendmail AGAIN and nobody at uunet got email for
an hour or two.

Two iterations of this.

	/r$