This section attempts to be your guide through a wide range of effective and slightly convoluted shell commands: once you get comfortable with working on the terminal and its basics, you will be able to understand further the importance and usefulness of acquiring a solid knowledge of Shell. Most commands in this section are appropriate to your daily tasks as a computer scientist, you can also learn how to script these tasks and automate them. These commands vary from compressing a file and changing group permissions to installing new commands available on diverse online sources. A lot of examples are available for each individual command and their most relevant flags, so that you can learn in an interactive and visual way.