Multi-Level Group access

gw1500se · 11-18-2012, 04:09 PM

It has been awhile since I've need to do anything with permissions until now but I can't remember the trick to setting multi-level group permissions. I need to give one group R/W access, another R/O access while denying all access to everyone else. TIA.

jv2112 · 11-18-2012, 06:40 PM

Set the guid.

http://www.expertslogin.com/linux-ad...bit-suid-guid/

gw1500se · 11-18-2012, 09:06 PM

I don't see how that helps. The R/O group does not exist with that directory. If I change the group to the R/O group then I have a problem with the R/W group.

jv2112 · 11-19-2012, 05:41 AM

Set GUID so the r/w group can share the files created. Then set all others to r/o. ( You also need execute to access the directory)

Code:


chmod -r 2775 /directory/in/question


2 - guid -- Files are created based on group
7 -rwx --> Owner
7 -rwx --> Group
5 -r-x --> Others


chown -R owner.group /directory/in/question

Now you should have a working directory for a group to share full access while all others can only read.

gw1500se · 11-19-2012, 08:12 AM

Thanks for the reply but that does no do what I need. Perhaps I was not clear enough in my original explanation. I do cannot give all others access. I need R/W for groupa, R/O for groupb and NO access for all others.

jv2112 · 11-20-2012, 05:13 AM

Go it. Unfortunately , I don't believe it is possible --

---to have two seperate groups on a directory or a file.

gw1500se · 11-20-2012, 08:52 AM

Thanks. I believe I need ACLS to do that.