Permissions

[Mckay_1]

I need to find out if what I am trying to is possible and if it is I get a little assistance in how to configure it.

What I am trying to is this:

I have a departmental folder housing two sub folders. The permissions on the parent folder for the department are 770 and the users from that department are all in a group based on their departments name. One of the users who is granted access as a member of the group needs to be denided access to one of the two sub folders.

How do I allow all users in the department into the first folder (this works already) but at the same time allow all but one into the second folder?

I hope this makes sense and I would be most greatful for any assistance.
Thank you,

[mikesd]

look into the suid and sgid commands