In Linux system, a group is a collection of users which have the same permissions on files and directories. When working as system administrator, might need to add or remove user from group. This tutorial shows how to do that in Linux.
Add user to group
The usermod
command can be used for modifying existing user details. In order to add user to a secondary group, use -a
and -G
option. For example, the following command adds james
user to test-group
group:
sudo usermod -a -G test-group james
In order to add user to multiple secondary groups at once, separate groups by comma as follows:
sudo usermod -a -G test-group,test-group2 james
Check user groups:
groups james
Remove user from group
To remove a user from a group, use the gpasswd
command with -d
option. For example, the following command removes james
user from test-group
group:
sudo gpasswd -d james test-group
Change user's primary group
Primary group of the user can be changed using usermod
command with -g
option.
sudo usermod -g test-group james
Leave a Comment
Cancel reply