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From: gpvos@cs.vu.nl (Gerben 'P' Vos)
Newsgroups: comp.os.minix
Subject: Re: executable scripts?, and retraction of bovine exhaust
Message-ID: <9851@star.cs.vu.nl>
Date: 6 May 91 11:29:50 GMT
References: <52579@nigel.ee.udel.edu>
Sender: news@cs.vu.nl
Lines: 15

wjb%cogsci.COG.JHU.EDU@vm1.nodak.edu writes:

>Caveat:  Their would be one major difference between shell based and kernel
>based handling of "#!".  If it is in the kernel, you can have setuid
>scripts.  Such scripts are now frowned upon by many people as it is very
>difficult to make standard shell scripts truly secure against crackers.
>Some intepreters (like perl?) though can apparently handle this properly.

No, but perl warns you and refuses to execute the script if you haven't
disabled setuid #! scripts in the (BSD) kernel. How it can check for that is
beyond my understanding (maybe it's in the configure script?).

. . . . . . . . . . . . . . . . . . . . . . . . . . . G e r b e n   V o s   <><
Aconet: BIGBEN!Gerben Vos  Internet: gpvos@cs.vu.nl
R.I.P. Radio Canada International   1942-1991