| Command |
Description |
| id |
Shows the active user and group information. With -G switch you can view the IDs of groups |
| last |
Shows a list of last logins on the system. Using -a switch you can add the hostname to the last column of the output |
| who |
Shows who is logged on the system |
| groupadd admin |
Adds the group “admin” |
| useradd -c “Sam Tomshi” -g admin -m sam |
Creates user “sam” and adds to group “admin” |
| userdel sam |
Deletes user sam |
| adduser sam |
Adds user “sam” |
| usermod |
Modifies user information |
| passwd user1 |
Changes the password of user1 |