Linux Cheetsheet: Group and user management

• Create a group

sudo groupadd groupname

• Create a user

Add to a specific group

sudo useradd -g groupname username

Create a user with home

sudo useradd -m username

(To a specific path)

sudo useradd -m -d /path username

• Add a user to groups

One group only

sudo usermod -aG groupname username

Multi-group

sudo usermod -aG groupname1,groupname2 username

• Remove user from a group

sudo gpasswd -d username groupname

• Change main group

sudo usermod -g primarygroupname username

• Show user information

id username

Show group information of the user only

groups username

• Show all users

cat /etc/passwd | less

• Show all groups

cat /etc/groups | less

• Delete user

sudo userdel -r username

• Delete group

sudo groupdel groupname