`root` is the default administrative user account or superuser in Linux. Disabling the `root` user ensures that only specific users can perform administrative tasks, and install specific packages on your system with sudo (super user do) privileges. You must only disable the `root` user if you have an existing non-root user with sudo privileges to run all administrative tasks. This article explains how to disable root login in Linux and allow only sudo users to perform administrative tasks. Befor......