The root is the most privileged account in Linux for the system administrator. The root user has you full access to the system to perform all kind of access. The root is default account of Linux, created with Linux installation only. The root user is also known as the Root account or superuser. Due to uncontrolled access of Root account, this account needs to be secured and used crucially and carefully. Some of the functions can be performed by the Root account:- The root can create/delete/ modify any user, user group, files, directory and permissions The root can connect by using any user without password System / Library / function calls Managing hidden & config files System administrator commands Etc.