IN THIS CHAPTER
Discovering the basics of command shells
Identifying file and directory commands
Discovering commands that help with packages and services
Figuring out commands for managing users and groups
Becoming familiar with networking commands
Linux has several nice graphical user interfaces (GUI) to choose from, and many of the more common Linux networking functions have graphical configuration utilities. Still, many Linux configuration tasks can be done only from a command shell. In many cases, though, the configuration utility provides access only to the most basic configuration parameters, so if you want to configure advanced features, you have to use commands. In fact, some network features don’t even have a graphical configuration utility, so you have no choice but to use commands.
Even when GNOME-based alternatives are available, you’ll often resort to using commands because frankly, that’s what Linux was built to do. Unlike Windows, Linux relies ...