Alright, so as I wanted to post some basic group commands in Linux. Since it’s not an operating system I use full time I have a hard time remembering little things; so I figured I’d create a little post.

Now let’s open a terminal and have some fun.

Adding a Existing User Account to a Group….

sudo usermod -a -G yourgroup yourusername

Add a New Group

sudo groupadd thenewgroup

Viewing the Groups a User Account is a Member of

groups

or if you want numerical ID’s associated with your groups

id

Creating a New User and Assigning him/her to a Existing Group

sudo useradd -G groupname username

Adding a User to Multiple Groups

usermod -a -G grp1,grp2,grp3 username

Viewing All Groups on your System

getent group