Add & Delete Groups in Linux
Last modified: 2023-10-30
We can easily add/delete groups in Linux using `groupadd`, `groupdel` commands.
Add/Delete Groups
# Add a group
groupadd <group>
# Delete a group
groupdel <group>
Add User to Group
# -a: Append the user to the specific group
# -G: Group
usermod -a -G <group> <user>
# Change user's primary group
# -g: GID
usermod -g <group> <user>
Sudo Group
Ussers who belong to sudo group can execute commands with sudo.
To add a user to the sudo group, run the following command.
usermod -a -G sudo <user>
After that, we can check the result.
# Switch to target user
su <user>
# List the user's privileges.
sudo -l
List Groups
We can see groups exist in Linux using the following commands.
cat /etc/group
groups
# List groups where the specific user in
groups <user>