What’s in This Book?
This book is a short guide, not a comprehensive reference. We
cover important, useful aspects of Linux so you can work productively.
We do not, however, present every single command
and every last option (our apologies if your favorite was omitted),
nor delve into detail about operating system internals.
Short, sweet, and essential, that’s our motto.
We focus on commands, those pesky little words you type on
a command line to tell a Linux system what to do. Here’s an
example command that counts lines of text in a file, myfile:...