How To – Users/Groups In Linux

In Linux, a group is a unit in which you can manage privileges for several users simultaneously. Linux groups allow you to manage multiple user permissions quickly and easily.

Create

#Create group if it doesn't exist:
sudo groupadd new_group

#Add user:
sudo adduser user_name new_group

or

#Create user and add it to group:
sudo useradd –G new_group new_user

#Set user password:
sudo passwd new_user

Delete

#Remove from group:
sudo gpasswd –d user_name new_group

#or Change user primary group:
sudo usermod –g new_group user_name

List

#All groups:
sudo nano /etc/groups

#or current user groups:
groups