Users and Groups Management

List users

$ lastlog

List user’s groups

$ groups

Add user to a specific group

# usermod -G group_name -a username

List groups

$ cat /etc/group

Create user

# adduser username
# passwd username

Delete user

# userdel username

Delete user and user’s home directory

# userdel -r username

Create group

# groupadd group_name

Delete group

# groupdel group_name

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