Is it possible to unset root password?

Is it possible to unset the root password once it has been set in ubuntu?

Am trying to run a backup using Arcserve R16 backups agents. I run it as the admin user but of course it does not have root permissions without sudo, which the backup agent does not run (or support). My thinking, to get an initial full backup, was to enable the root account and then run the backup as that user and then remove the password afterwards. Do not think this is strictly best practice but have been scrathcing my head over this for awhile now :(

Solution 1:

Yes, it is.

sudo passwd -dl root

https://help.ubuntu.com/community/RootSudo#Re-disabling_your_root_account