Path: utzoo!attcan!uunet!auspex!guy
From: guy@auspex.UUCP (Guy Harris)
Newsgroups: comp.unix.wizards
Subject: Re: Setuid Shell Scripts -- Read The Whole Story Now!
Keywords: To End All Clamor
Message-ID: <459@auspex.UUCP>
Date: 16 Nov 88 18:41:52 GMT
References: <850@cantuar.UUCP> <1627@solo8.cs.vu.nl> <855@cantuar.UUCP> <1658@solo11.cs.vu.nl>
Reply-To: guy@auspex.UUCP (Guy Harris)
Organization: Auspex Systems, Santa Clara
Lines: 22

>What about the csh command interpreter? Well, Sun Unix provides us with a csh
>which has a NEW option: "-b"!

Credit where credit is due; Berkeley provides that in 4.3BSD, Sun just
picked it up.

>Its goal is to avoid just the thing described above: the mnemonic for
>`b' is `break'; this option prevents following arguments of an exec of
>/bin/csh from being interpreted as options...

An early 4.3 alpha or beta Bourne shell had this, but I think they
realized that the "-" (yes, just "-") option already handled this in the
Bourne shell - just use

	#! /bin/sh -

rather than

	#! /bin/sh

However, the other problems discussed still exist, so, as you state, you
have to do more than that....