How to create sudo user in Ubuntu 18.04.3 LTS

The sudo command provides administrator privileges to user, ordinarily only available to the root user, to normal users. This article will show usthe easiest way to create a new user with sudo access on Ubuntu. We won’t be updating/modifying your server’s sudoers file.
If you want to configure sudo for an existing user, simply skip to step 3.

1. Login to the server with root OR switch to the root.

ssh root@server_ip_address
OR
ssh rootuser@server_ip_address
sudo su

2. We can use addusercommand to add new user to the system. Be sure to replace the username with your user name.

adduser username

2.1. Set and confirm the new user’s password at the prompt. A strong password is highly recommended for root, since anything can be done on server/machine with that access.

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

2.2 Write the information for the user. If you want to leave the value blank then just press Enter.

Changing the user information for username
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]

3. use usermod command to add the user in sudo group.
usermod -aG sudo username

4. switch to the user. su — username

5. switch to root of that user. sudo su | sudo -i

6. Now you can run commands which can be run via only root user.

This is very basic from linux and wrote the article because of having queries for above multiple times.
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Thank you very much for reading this.

Happy Learning !!! 🙂 📚

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• Changing the user information for username 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]