How do I create a super user in Linux?

Superuser accounts are highly privileged accounts primarily used for administration by specialized IT employees . These users/accounts may have virtually unlimited privileges, or ownership, over a system. Superuser account privileges may allow: full read/write/ execute privileges.

Superuser privileges are given by being UID (userid) 0. grep for the user from the /etc/password file . The first numeric field after the user is the UID and the second is the GID (groupid). If the user is not UID 0, they do not have root privileges.

Ways to Become root user or Superuser in Linux

Creating a super user on a Linux operating system