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. 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.