Unix Access

Hi,

I'm a bit new at this, so please bear with me.

If I have a user, USER1, and his user ID is 523, and then there is the
group USER1 with a group ID of 523.

How come USER1 can change to all the other directories and see
everyone's files? If he only belongs to his own group, shouldn't he
be restricted to his home directory?

What basic thing am I missing???

Thank you!

John

A couple of ideas:
Search of directories (and cd to) are controlled by the x bit in the
mode. Check the directory's go+rx setting, i.e., mode = rx.rx would
give access to other group members or system wide.

The match between uid for one user and gid for another is also
suspicious. Fedora, for example, creates new users with matching uid and
gid. If USER1's gid is ALS 523, putting both users in the same group,
then directories/files with gid=523 and mode g+r.

Linux and many other versions of UNIX support multiple groups: If I'm
listed as a member of group 523, I'm a member of that group in addition
to my default login group. See id(1).

Mtek wrote:
Hi,
>
I'm a bit new at this, so please bear with me.
>
If I have a user, USER1, and his user ID is 523, and then there is the
group USER1 with a group ID of 523.
>
How come USER1 can change to all the other directories and see
everyone's files? If he only belongs to his own group, shouldn't he
be restricted to his home directory?
>
What basic thing am I missing???
>
Thank you!
>
John