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How To Add and Delete Users on Ubuntu 12.04 and CentOS 6

How to Add a User on Ubuntu 12.04

To add a new user in Ubuntu, use the adduser command, replacing the “newuser” with your preferred username

sudo adduser <span class="highlight">newuser

As soon as you type this command, Ubuntu will automatically start the process:

  • Type in and confirm your password
  • Enter in the user’s information. This is not required, pressing enter will automatically fill in the field with the default information
  • Press Y (or enter) when Ubuntu asks you if the information is correct

How to Grant a User Root Privileges

As mentioned earlier, you are much better off using a user with root privileges.

You can create the sudo user by opening the sudoers file with this command:

sudo /usr/sbin/visudo

Adding the user’s name and the same permissions as root under the the user privilege specification will grant them the sudo privileges.

User privilege specification

root ALL=(ALL:ALL) ALL

<span class="highlight">newuser</span> ALL=(ALL:ALL) ALL

 

How to Delete a User

Should you find that you find that you no longer want to have a specific user on the virtual private server you can delete them with a single command.

sudo userdel <span class="highlight">newuser

 

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