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Re: What's in a group?

From: Thomas Schwinge
Subject: Re: What's in a group?
Date: Sun, 19 Mar 2006 17:58:16 -0500
User-agent: Mutt/1.5.6+20040907i

On Sun, Mar 19, 2006 at 11:17:48PM +0100, Marcus Brinkmann wrote:
> But what corresponds to the Unix group concept?  I have identified two
> semantic uses for a "group":
> 1) Sharing information and authorization.  Ie, allow communication
>    among users of the same group.
> 2) Provide durable storage that is not associated with any particular
>    member of the group.

3) Hindrance of the above.

$ groups
users foo
$ ls -l /tmp/not-for-fooers
-rw----rw- 1 thomas foo 0 Mar 19 23:45 /tmp/not-for-fooers
$ cat /tmp/not-for-fooers
cat: /tmp/not-for-fooers: Permission denied

(Obviously, this works only as long as you're not allowed to drop group

I don't know if there's a real-world example of this facility being used,


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