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From: Borja Marcos <borjamar@sarenet.es>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] mv vs cp
References: <3BC28DCE.DED058D9@null.net> <11311.1002627821@apnic.net> <3BC3CAF6.618A2A9@null.net>
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Date: Wed, 10 Oct 2001 13:50:35 +0200
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On Wednesday 10 October 2001 10:57, you wrote:
> George Michaelson wrote:
> > Surely hard links couldn't point to directories, ...
>
> Yes, they could.  It was a common form of corruption in 6th Edition
> UNIX.

=09You could even do weird things. For example, this worked under SCO Uni=
x.

=09cd /some/directory
=09mkdir another
=09unlink ..
=09link another ..
=09unlink another

=09And you had a directory called "/some/directory/.." which didn't actua=
lly=20
point to "/some/directory", but was a new directory. It was a great way f=
or=20
hackers to hide things in a machine.



=09Borja.