TOOL » LINUX » MANAGER

User

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User management ​

To add user:

shell
useradd OPTIONS USERNAME
OptionDescription
-mCreate home folder
-pSet password (inline)
-G g1,g2Add user to groups

To delete user:

shell
userdel -r USERNAME

To edit user:

shell
chfn USERNAME        # Change finger information
passwd USERNAME      # Update password
passwd -d USERNAME   # Delete password
usermod -u 1001 USERNAME  # Update UID

Check user UID:

shell
id -u USERNAME

To list existing users in the system:

shell
cat /etc/passwd

Groups ​

To list existing groups in the system:

shell
getent group

List groups of a user:

shell
groups USERNAME

Manage groups:

shell
gpasswd OPTIONS USERNAME GROUP
OptionDescription
-aAdd to group.
-dRemove from group.

Update GID:

shell
groupmod -g 1001 GROUPNAME

Check group GID:

shell
id -g GROUPNAME

Delete group:

shell
groupdel GROUPNAME

Giving admin privileges ​

Run visudo and edit the desired privileges:

shell
username ALL=(ALL) ALL  # Only for user
%wheel ALL=(ALL) ALL    # For all users in wheel group