The Official Red Hat Linux Reference Guide Prev Chapter 14.
Root has complete access to the entire system.
Logging in as the root user is best done only to perform system maintenance or administration. For instructions on how to create or modify user accounts after installation, refer to Chapter 3 or the Getting Started chapter in the Official Red Hat Linux Getting Started Guide . Passwords are case-sensitive and must contain at least six characters. Select Add to do so or OK to continue. Otherwise, continue reading.