SUDO

Ü  SUDO - Super User DO [It is a way to temporarily grant a user administrative right]
 
vi /etc/sudoers
 
## Allow root to run any commands anywhere

root     ALL=(ALL)       ALL                            #Run all command
nick     ALL=LOCATE                                     #Only can run locate command
alex     ALL=(ALL)       NOPASSWD: ALL    #Run any command without password
 
root                       - User
ALL=(ALL)         - Machine/Host | all the user & group can execute
ALL                      - All command
 
## Allows people in group wheel to run all commands

%wheel  ALL=(ALL)       ALL