Chapter 4: Using Linux Commands

Overview

In This Chapter

• Understanding the Linux shell

• Using the Linux shell

• Working with the Linux file system

• Using the vi text editor in Linux

This chapter presents a view of Linux from the shell. The shell is a command-line interpreter that lets you access some of the most critical Linux tools. The shell is powerful, complex, and almost completely unintuitive.

Although at first it isn't obvious how to use the shell, with the right help you can quickly learn many of the most important shell features. In Fedora and RHEL, bash is the shell command interpreter used by default (and therefore, the one used for most of the examples in this chapter). Other shells , such as csh, ksh, sh and others, are also available in Fedora and RHEL and are therefore also noted in this chapter.

This chapter is your guide to working with the Linux system commands, processes, and file system from the shell. It describes the shell environment and helps you tailor it to your needs. It also describes how to use and move around the file system.