Users & Groups

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If for some reason, you wish to enable the root account, simply give it a password:

~ sudo passwd

To disable the root account password, use the following passwd syntax:
~ sudo passwd -l root

Adding and Deleting Users

~ sudo adduser username

~ sudo deluser username

You may want to change these UID/GID values to something more appropriate, such as the root account, and perhaps even relocate the folder to avoid future conflicts:

sudo chown -R root: root / home/username/
sudo mkdir /home/archived_users/
sudo mv /home/username /home/archived_users/

To temporarily lock or unlock a user password, use the following syntax, respectively:

sudo passwd -l username
sudo passwd -u username

To add or delete a personalized group, use the following syntax, respectively:

sudo addgroup groupname
sudo delgroup groupname

### Adding users into the group 

sudo adduser username groupname
sudo deluser username groupname