sudo

Install
is probably pre-installed with your system. To test it, run In case it is not installed, you can install it using

Backup root Access
Some Linux distributions (Ubuntu, Raspbian…) come with  preconfigured and no password for the root user. This pose a risk of locking you out in case you break.

If you are not confident, you can add a password to the root user before edition to be sure to have a second way to gain root access

Remove root Password
Once you are done configuring, you might decide to disable the root account (the is the default state on Ubuntu). This will leave you with  for all tasks requiring the root account.