Chapter 8
Linux Commands
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 is, at its core, a command-line-driven operating system. You can add a nice graphical user interface (GUI) such as GNOME, but most server administration is done through the command line. In this chapter, I explain the ins and outs of using the command line and explore the details of using some of the most common Linux commands.
Command Shell Basics
A shell is a program that accepts commands from a command prompt and executes them. The shell displays a prompt to let you know it’s waiting for a command. When you type the command and press Enter, the system reads your command, interprets it, executes it, displays the results, and then displays the prompt again so that you can enter another command.
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