Users, groups and directory access

[A.J. Bonnema]

David L Norris wrote:
> # create proj group
> groupadd proj
> 
> # make an administrator own the root dir. paul.proj is also fine...
> chown -R root.proj /project
> 
> # make permissions inherit to children...
> chmod g+rwxs /project
> 
> # root can change john's group membership like this
> usermod -G proj john
> 
> 
> # which should be equivalent to this but I've had trouble with it
> gpasswd -a john proj
> 
> # in theory, this would make Paul proj's administrator
> gpasswd -A paul proj
> 
> 
> # to verify john was added where he belongs:
> grep john /etc/groups
> 
Hi David,

Your answer did it: it works!

However, because I had done both the usermod-thing and the 
gpasswd-thing, I'm not sure whether one or both work correctly: the 
logoff did it (I had to logoff from X though).

Thanks for your instructive mail.
Still not a sysadmin, but at least I start to understand groups.

Guus.
-- 
A.J. Bonnema, Leiden The Netherlands,
user #328198 (Linux Counter http://counter.li.org)