Although you need to study concepts throughout this course, you will also need to learn to '''issue and memorize simple as well as more advanced Linux commands'''. This requires that you practice issuing Linux commands on a frequent basis to become more comfortable when working the Unix and '''Linux command-line environments'''.

Just like with other operating systems like MS Windows, it is important to learn how to open a command prompt in order to issue Linux commands to perform common Linux OS administration tasks. In Unix/Linux, a '''shell''' is simply an interface / interpreter to allow a user to communicate with the Linux computer system (server). Linux shells have evolved (improved) over a period of time. You will be using the '''Bash Shell''' which is considered to be user-friendly.