topic Re: should I use setgid in this situation, or something else? in Operating System - Linux

should I use setgid in this situation, or something else?

Hanry Zhou — Wed, 26 May 2004 10:03:15 GMT

I have a number of files "xyz.1", xyz.2",... under the directory "dirname"

cd dirname(with permission of 775)
ls -l
-rw-rw---- david users xyz.1
-rw-rw---- david users xyz.2
...

now, I have another id called "john", and he belongs to group "grp-a", and "john" want to be able to read all these xyz.* files. What I should do to achive this?

I did chmod 2775 on dirname, but "john" still can't read all these xyz.* file.

Can 2775 to achive what I want, and what is the correct method to achive what I want.

Thanks,

Re: should I use setgid in this situation, or something else?

Jeroen Peereboom — Wed, 26 May 2004 10:25:21 GMT

L.S.

setgid is NOT what you want. Setgid is used for programs, such that if you execute the program your group is changed to that of the programfile.

Easiest solutions:
Add john to the users group?
Make the files world-readable (-rw-rw-r--)?

JP

Re: should I use setgid in this situation, or something else?

Mark Grant — Wed, 26 May 2004 11:52:12 GMT

Actually, if you add "john" to group users you won't need world readable permission on the files. Remember a user can be in more than one group. Have a look at /etc/group

Re: should I use setgid in this situation, or something else?

Jeroen Peereboom — Wed, 26 May 2004 13:03:11 GMT

Hanry,

Check this thread in the HP-UX forumr ???

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=603007

Now you have 2 competing threads and I feel like loosing time answering this one... :-)

JP