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How to create a user tech_support in linux and add it to sudoer file ?

Create a New Sudo User

To add a new sudo user, open the terminal window and enter the command.

useradd tech_support

 

create a password for the new user by entering the following in your terminal window.

passwd tech_support

The system should display a prompt in which you can set and confirm a password for your new user account. If successful, the system should respond with “all authentication tokens updated successfully.”

 

Add User to Sudoers Configuration File

Open the Sudoers File in an Editor

In the terminal, run the following command.

visudo

Add the New User to file

Scroll down to find the following section

Allow root to run any commands anywhere
root ALL=(ALL) ALL

Right after this entry, add the following text

tech_support ALL=(ALL) ALL

 

This section should look like the following

root ALL=(ALL) ALL 

tech_support ALL=(ALL) ALL

Save and exit 

:wq

 

Test Sudo Privileges for the User Account

Switch user accounts with the su (substitute user) command

su – tech_support

Enter the password for the account, if prompted. The terminal prompt should change to include tech_support.

 

List the contents of the /root directory

sudo ls —la /root

Enter the password for this user when prompted. The terminal should display a list of all the directories in the /root directory.