[ Thanks to Go2linux for this link.
“The file /etc/sudoers, has the rules that users have
to follow when using sudo command.
“If you are (or was) running Ubuntu, you may know that by
default the root account is not usable in Ubuntu, because it has no
password, you may assign one and use it as in every other Linux,
but that is another story. On normal Ubuntu Linux machines you need
to use sudo command to perform operations as root.
“I like that approach, and even though I am using Debian, I
always give my account root rights, so I can run commands as root
without changing to root.”