Create userA and userB and check if the users created useradd [OPTIONS] USERNAME useradd creates a new user account according to the options specified on the command line and the default values set in the /etc/default/useradd The command adds an entry to the /etc/passwd, /etc/shadow, /etc/group and /etc/gshadow files only sudo users can create sudo useradd userA sudo useradd userB sudo cat /etc/passwd Give userA admin rights With the new user created, it's time to give them sudo rights. For this we'll use the usermod command like so: sudo usermod -aG sudo userA Create /operations folder cd / mkdir operations User A must have admin rights on /operations