Book Image

Linux Command Line and Shell Scripting Bible - Third Edition

By : Richard Blum, Christine Bresnahan
Book Image

Linux Command Line and Shell Scripting Bible - Third Edition

By: Richard Blum, Christine Bresnahan

Overview of this book

The Linux command line enables you to type specific shell commands directly into the system to manipulate files and query system resources. Command line statements can be combined into short programs called shell scripts, a practice increasing in popularity due to its usefulness in automation. Linux is a robust system with tremendous potential, and Linux Command Line and Shell Scripting Bible opens the door to new possibilities. Linux Command Line and Shell Scripting Bible is your essential Linux guide. It contains new functional examples that are fully updated to align with the latest Linux features. Beginning with command line fundamentals, the book moves into shell scripting and shows you the practical application of commands in automating frequently performed functions. This book is a complete guide providing detailed instruction and expert advice working within this aspect of Linux. Whether used as a tutorial or as a quick reference, this book contains information that every Linux user should know.
Table of Contents (34 chapters)
2
Part I: The Linux Command Line
13
Part II: Shell Scripting Basics
20
Part III: Advanced Shell Scripting
28
Part IV: Creating Practical Scripts
32
End User License Agreement

Navigating the nano Editor

Although vim is a very complicated editor with many powerful features, nano is a very simple editor. For individuals who need a simple console mode text editor that is easy to navigate, nano is the tool to use. It's also a great text editor for kids who are starting on their Linux command line adventure.

The nano text editor is a clone of the Unix systems' Pico editor. Although Pico also is a light and simple text editor, it is not licensed under the GPL. Not only is the nano text editor licensed under the GPL, it is also part of the GNU project.

The nano text editor is installed on most Linux distributions by default. Everything about the nano text editor is simple. To open a file at the command line with nano:

$ nano myprog.c

If you start nano without a filename, or if the file doesn't exist, nano simply opens a new buffer area for editing. If you specify an existing file on the command line, nano reads the entire contents of the file into a...