Adding a new user to your Linux server
In your terminal run the below command. It will ask you to set a new password, create a randomly generated one to be safe. After this it will also ask you to set some user information, which you can skip.
adduser username
Sudo permissions
Grant sudo permissions to your new username. To see what permissions you have set already on an account by running:
id username
Add sudo permissions:
usermod -aG sudo username
Change to the new user by running
su - username
Confirm you are now the new user by running:
whoami