I had added user umarzuki to wheel group # usermod -G wheel umarzuki
*Yes, I can use/setup sudo but I do this just for learning purpose
My /etc/pam.d/su as below
auth sufficient pam_rootok.so # Uncomment the following line to implicitly trust users in the "wheel" group. #auth sufficient pam_wheel.so trust use_uid # Uncomment the following line to require a user to be in the "wheel" group. auth required pam_wheel.so use_uid auth include system-auth account sufficient pam_succeed_if.so uid = 0 use_uid quiet account include system-auth password include system-auth session include system-auth session optional pam_xauth.so
when i su to user umarzuki and view its id output $ id uid=500(umarzuki) gid=500(umarzuki) groups=10(wheel),500(umarzuki)
and i tried run $ yum update Loaded plugins: fastestmirror You need to be root to perform this command.
but i managed to change the interface's IP with this command $ /sbin/ifconfig eth0 192.168.1.1 netmask 255.255.255.0 up
Is there a step that i missed?