adduser -u 0 -o -g 0 -G 0,1,2,3,4,6,10 -M root2
| adduser | -u 0 -o | -g 0 | -G 0,1,2,3,4,6,10 | -M | root2 |
| Using Linux adduser command to create a new user account or to update default new user information. | Set the value of user id to 0. | Set the initial group number or name to 0 | Set supplementary group to:0 = root
1 = bin 2 = daemon 3 = sys 4 = adm 6 = disk 10 = wheel |
‘home directory’ not created for the user. | User name of the new user account. |