What are the default user rights in Ubuntu?

Question

ubuntu

Is the user created during Ubuntu installation the root user or just a user in the sudo group? Is it safe to continue using it on the production server, or is it better to create a separate user in the sudo group?

Answer 1

The root user (whatever you call it) has UID=0, and there can only be one.
Everyone else is a sudo user.
Your user is most likely added to sudo by default.
You can run the
id command
and see your UID and your groups

Answer 2

It's just that this user is added to the sudo group by default.