I knew that root is : UID = 0 and GID = 0
Suppose that If I want to add another user than has the same abilitiy/priviledge as root.
1) I assign <newuser> with UID = 0 and GID = 0 too?
2) What is the different between <newUser> -> UID = 0 and GID = not 0
with <newUSER> -> UID = not 0 and GID 0
What is the implication of both case?