Loging in as Administrator on GNU/Linux Shell
The Linked Linux Guides Simply Shows You How to Get a Login as the Root SuperUser on Terminal/Shell/Command-Line for most GNU/Linux Distributions.
In Unix-like computer OSes, root is the conventional name of the user who has all rights or permissions (to all files and programs) in all modes (single- or multi-user).
On Unix-like systems the user with a user identifier (UID) of zero is the Linux SuperUser, regardless of the name of that account
Be Cautious because the SuperUser has the Powers to Execute All Good/Bad Actions and Commands on GNU/Linux Shell.