How to Add a User and Grant Root Privileges on Ubuntu 12.04

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Users via Command Line 101: Basic User Interaction
I. How to Add a User and Grant Root Privileges on Ubuntu 12.04 LTS II. How to Remove (Delete) a User on Ubuntu 12.04 LTS
Pre-Flight Check
  • These instructions are intended specifically for adding a user on Ubuntu 12.04 LTS.
  • I’ll be working from a Liquid Web Core Managed Ubuntu 12.04 LTS server, and I’ll be logged in as root.
Step 1: Add the User
It’s just one simple command to add a user. In this case, we’re adding a user called mynewuser : adduser mynewuser First, you will be prompted to enter the user’s password (twice); do this step. Next, you’ll be prompted to enter in the user’s information. This step is not required, and pressing enter fills the field with the default information: Adding user `mynewuser' ... Adding new group `mynewuser' (1001) ... Adding new user `mynewuser' (1001) with group `mynewuser' ... Creating home directory `/home/mynewuser' ... Copying files from `/etc/skel' ... Enter new UNIX password: Retype new UNIX password: passwd: password updated successfully Changing the user information for mynewuser Enter the new value, or press ENTER for the default Full Name []: User Room Number []: Work Phone []: Home Phone []: Other []: When prompted with the following question, enter Y then hit enter to continue. Is the information correct? [Y/n] Y
Step 2: Grant Root Privileges to the User
visudo Find the following code: # User privilege specification root ALL=(ALL:ALL) ALL In this case, we’re granting root privileges to the user mynewuser . Add the following below that code: mynewuser ALL=(ALL:ALL) ALL Then exit and save the file with the key commands Ctrl-x, Y, enter. If you’ve followed the instruction above correctly, then you should now have a user setup by the name of mynewuser which can use sudo to run commands as root!
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