CHAPTER 10

Command-Line Beginner’s Class

IN THIS CHAPTER

What    Is  the Command Line?

Accessing   the Command Line

User    Accounts

Reading Documentation

Understanding   the Linux   File    System  Hierarchy

Navigating  the Linux   File    System

Working with    Permissions

Working with    Files

Working as  Root

Commonly    Used    Commands    and Programs

References

The Linux command line is one of the most powerful tools available for

computer system administration and maintenance. The command line is also
known as the terminal, shell, console, command prompt, and command-line
interface (CLI). For the purposes of this chapter and the next, these terms are
interchangeable, although fine-grained differences do exist between them.

Using the command line is an efficient way to perform complex tasks
accurately and much more easily than it would seem at a first glance.
Knowledge of the commands available to you and also how to string them
together makes using Ubuntu easier for many tasks. Many of the commands
were created by the GNU Project as free software analogs to previously
existing proprietary UNIX commands. You can learn more about the GNU
Project at www.gnu.org/gnu/thegnuproject.html.