How to make it so that you do not have to constantly type 'sudo ' before the command?

Question

linux

I want to do on my own home server as it was done in the installation of Ubuntu 12.04 LTS on hetzner. There you just log in via SSH and you are with superuser rights.
I searched but didn't find how to do it myself.

Answer 1

$ sudo -i
and then run as root.
Well, or enable the ability to log in immediately under the root (set the root password via sudo passwd root).

Answer 2

offhand there are two options:
1. from the start, log in as root via ssh
2. sudo su -

Answer 3

Sometimes it's too lazy to enter additional commands, and I just write sudo mc(of course, if mc is installed). Further, all actions in mc go under the superuser)