usersgroups.md

Users & Groups

Create group

[groupadd](/man/groupadd) [name] [addgroup](/man/addgroup) [name]

Delete group

[groupdel](/man/groupdel) [name]

Rename group

[groupmod](/man/groupmod) -n [newGroupname] [oldGroupname]

Create user

[useradd](/man/useradd) [name] [adduser](/man/adduser) [name]

Delete user

[userdel](/man/userdel) [name] [deluser](/man/deluser) [name]

Rename user

[usermod](/man/usermod) -l [newUsername] [oldUsername]

Set user password

[passwd](/man/passwd) [name]

Grant sudo privileges to an existing user

[usermod](/man/usermod) -a -G sudo [user] [adduser](/man/adduser) [user] sudo

User information

[finger](/man/finger) [user]

Add existing user to group

[usermod](/man/usermod) -aG [groupName] [userName] [adduser](/man/adduser) [userName] [groupName] [gpasswd](/man/gpasswd) -a [userName] [groupName]

Add new user to group

[useradd](/man/useradd) -G [group] [user]

Remove user from group

[gpasswd](/man/gpasswd) -d [user] [group] [deluser](/man/deluser) [user] [group]

List all groups

[getent](/man/getent) group [cat](/man/cat) /etc/group

List all users

[getent](/man/getent) passwd [cat](/man/cat) /etc/passwd

Show current user

[whoami](/man/whoami)

Switch user

[su](/man/su) [user]

Show logged-in users

[who](/man/who) [w](/man/w) [users](/man/users)

Show user ID and groups

[id](/man/id) [user]

Show login history

[last](/man/last)