Here is how to add user to be a member of another user’s group in GNU/Linux.
Everytime I have to add user to a group I always try to remember for a few seconds how I did it last time.
Therefore I finally decided to blog it here that I possibly help to somebody out there and help myself easily look for it among the posts in case I forget sometime in the future:
There are two ways to add an user to a group.
1. Add user to a group directly editting /etc/groups
Let’s assume you are in need to add user test to the www-data groupHere is how:
linux-server:~# vim /etc/groups
Save the file and that should be enough, in the next login with user test you can observe the user is added to the www-data group
Put in the file
www-data:x:33:test
By typing the id command in the command line.
linux-server:~$ idid=1000(test) gid=1000(test)
groups=1125(test),1124(www-data)
2. Add user to another user group using the useradd and usermod commands
If you’re creating a brand new user to be membering a group use:
linux-server:~# useradd -G
linux-server:~# useradd -G www-data test
linux-server:~# passwd test
If for clarity you’d like to add an already existing user using a linux command consider using usermod
linux-server:~# usermod -a -G www-data test
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