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https://askubuntu.com/questions/44418/how-to-enable-root-login
https://www.tecmint.com/enable-and-disable-root-login-in-ubuntu/
https://www.cyberciti.biz/faq/ubuntu-linux-root-password-default-password/
https://de.wikihow.com/In-Ubuntu-Root-werden
https://serverfault.com/questions/703623/cant-switch-to-root-or-use-sudo
https://unix.stackexchange.com/questions/88183/how-to-enable-root-user-in-linuxubuntu
https://unix.stackexchange.com/questions/109944/why-is-the-sudo-password-different-than-the-su-root-password
https://ubuntuforums.org/showthread.php?t=2375804
https://help.ubuntu.com/community/RootSudo
https://www.linuxquestions.org/questions/linux-security-4/restrict-a-group-of-users-to-sudo-su-as-root-4175612004/
https://www.lifewire.com/what-is-sudo-2197466
https://unix.stackexchange.com/questions/291454/difference-between-sudo-user-and-root-user
https://aws.amazon.com/premiumsupport/knowledge-center/set-change-root-linux/