Step 1 – Connecting #

Firstly you need terminal access, if you are on an Ubuntu desktop then load the terminal. However, you can SSH if it is a remote server

ssh root@SERVER_IP_ADDRESS

Step 2 – Adding the User #

Next we need to add the user with the following command

adduser NAME_OF_USER

You will be prompted with the below output to set the password:

# Output
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully

Again with the next following output, these can be left blank by pressing ENTER:

# Output
Changing the user information for sammy
Enter the new value, or press ENTER for the default
    Full Name []:
    Room Number []:
    Work Phone []:
    Home Phone []:
    Other []:
Is the information correct? [Y/n]

Step 3 – Adding to Sudo Group #

Next we need to add the user to the sudo group:

usermod -aG sudo NAME_OF_USER

Step 4 – Testing the Sudo Privileges #

su - NAME_OF_USER

sudo ls -la /root

# Output
[sudo] password for NAME_OF_USER: