The Linux Command Line: A Complete Introduction

You’ve experienced the shiny, point-and-click surface of your Linux computer—now dive below and explore its depths with the power of the command line.

The Linux Command Line takes you from your very first terminal keystrokes to writing full programs in Bash, the most popular Linux shell. Along the way you’ll learn the timeless skills handed down by generations of gray-bearded, mouse-shunning gurus: file navigation, environment configuration, command chaining, pattern matching with regular expressions, and more.

In addition to that practical knowledge, author William Shotts reveals the philosophy behind these tools and the rich heritage that your desktop Linux machine has inherited from Unix supercomputers of yore.

As you make your way through the book’s short, easily-digestible chapters, you’ll learn how to:

• Create and delete files, directories, and symlinks
• Administer your system, including networking, package installation, and process management
• Use standard input and output, redirection, and pipelines
• Edit files with Vi, the world’s most popular text editor
• Write shell scripts to automate common or boring tasks
• Slice and dice text files with cut, paste, grep, patch, and sed

Once you overcome your initial “shell shock,” you’ll find that the command line is a natural and expressive way to communicate with your computer. Just don’t be surprised if your mouse starts to gather dust.

Praise for The Linux Command Line

“I can honestly say I have found THE beginner’s guide to Linux.”
—Linux Journal

“Anyone who reads this book and makes use of the examples provided will not be able to avoid becoming a Unix command line pro by the time they’ve hit the end of the book.”
—ITworld

“The most approachable tome on the subject.”
—Linux Magazine

“If you’re new to the command line there is definitely a lot that you can learn from this book.”
—Ubuntu Musings

“This is exactly what a Linux beginner needs to get up to speed quickly. The book goes beyond simply walking through all of the command line utilities, and ventures into the realm of theory and how things work together.”
—Nicholas C. Zakas, web software engineer and author

Table of Contents

Part 1: Learning the Shell
Chapter 1: What Is the Shell?
Chapter 2: Navigation
Chapter 3: Exploring the System
Chapter 4: Manipulating Files and Directories
Chapter 5: Working with Commands
Chapter 6: Redirection
Chapter 7: Seeing the World as the Shell Sees It
Chapter 8: Advanced Keyboard Tricks
Chapter 9: Permissions
Chapter 10: Processes

Part 2: Configuration and the Environment
Chapter 11: The Environment
Chapter 12: A Gentle Introduction to vi
Chapter 13: Customizing the Prompt

Part 3: Common Tasks and Essential Tools
Chapter 14: Package Management
Chapter 15: Storage Media
Chapter 16: Networking
Chapter 17: Searching for Files
Chapter 18: Archiving and Backup
Chapter 19: Regular Expressions
Chapter 20: Text Processing
Chapter 21: Formatting Output
Chapter 22: Printing
Chapter 23: Compiling Programs

Part 4: Writing Shell Scripts
Chapter 24: Writing Your First Script
Chapter 25: Starting a Project
Chapter 26: Top-Down Design
Chapter 27: Flow Control: Branching with if
Chapter 28: Reading Keyboard Input
Chapter 29: Flow Control: Looping with while and until
Chapter 30: Troubleshooting
Chapter 31: Flow Control: Branching with case
Chapter 32: Positional Parameters
Chapter 33: Flow Control: Looping with for
Chapter 34: Strings and Numbers
Chapter 35: Arrays
Chapter 36: Exotica