wojtek@wojtek.from.pl wrote:

> >
> > Did you read Phil's notes? How do you put yourself in 17 groups at once?
> 
> never have need for that

lucky you. not everybody is in that kind of situation.

Try doing group management in a large (30,000+ user) network 
environment where group membership and existence are extremely dynamic
(changes to groups are nearly continuous). 

Check out how AFS uses ACLs to handle the above problem. 

AFS ACLs:
http://www.transarc.com/Library/documentation/afs/3.5/unix/user/user10.htm

AFS Groups:
http://www.transarc.com/Library/documentation/afs/3.5/unix/user/user11.htm

-- 
-------------------------------------------------
Justin Wojdacki        
justin@chiplogic.com               (408) 350-5032
Communications Processors Group -- Analog Devices