Master Linux and Demystify The Shell! The Linux interface is a powerful tool to use. While the Linux GUI is slick and smooth, you know that the real magic lies under the hood. However, if you're just getting started, the various interfaces and combinations that exist in Linux can be confusing. System administrators do a lot of work to provide the end-user with the friendly interface they see when Linux boots on their computers. Administrators and Linux professionals need to learn both basic and advanced commands in Linux. Inputting these commands will make a difference between a decently running Linux OS and an OS that drags through different tasks. Seeing that Linux comes with a “license” copyright, learning these commands will help you make modifications to the Kernel or the Shell of the operating system.