Acl (Access Control List)
# vi /etc/fstab
LABEL=/ / ext3 defaults,acl 1 1
:wq (save and exit)
# mount -o remount,rw /
# mkdir test
# cd test
# cat >acltest.txt
Ctrl + D
Login with other user and open the file.
# getfacl /root/test/acltest.txt (Command will show the permission on the file.)
# setfacl -m u:user1:r-x /root/test/acltest.txt (Will set the permission on the file.)
# getfacl /root/test/acltest.txt
Login with user1 and try to open the file.
# setfacl -x u:user1 /root/test/acltest.txt (command will remove the acl permission from the file).
