Originally posted by: shibhikkiran

Hello all,

I'm a beginner in AIX, praticising couple of months.

This question was faced by me in one of my interview.

If I want to change the permission for only a specific user in a group, then how can I do it?

I think , it comes under Acess Control Logic (ACL) in file permissions.

But, I don't have any idea so could you help me by giving your thoughts.

Awaiting for your response.

Regards,
Kiran.
Chennai

Originally posted by: Srikrishan

The file mode is sometimes not enough(or makes to too complex) to specify all required access policies on a file/dir.

ACLs let you have a finer control on the the access to a file.
For your problems ACL on the file will look something like(GROUPX is allowed but user USERY belonging that group is denied access):

===
user:USERY:rwx:deny
group:GROUPX:rwx:allow
====

Format differs based on platform/types of ACL(posix/NFS4 etc)
There are many resources available for ACLs on all platforms.

e.g
http://www.ibm.com/developerworks/aix/library/au-acl/index.html
-Sri