Linux® Command Line and Shell Scripting BIBLE, 4th Edition by Richard Blum -- Read -- Imperial Library of Trantor

Index

Cover Table of Contents Title Page Copyright Dedication About the Authors About the Technical Editor Acknowledgments Introduction

Who Should Read This Book How This Book Is Organized Minimum Requirements Where to Go from Here

Part I: The Linux Command Line

CHAPTER 1: Starting with Linux Shells

Investigating Linux Examining Linux Distributions Summary

CHAPTER 2: Getting to the Shell

Reaching the Command Line Accessing CLI via a Linux Console Terminal Accessing CLI via Graphical Terminal Emulation Using the GNOME Terminal Emulator Using the Konsole Terminal Emulator Using the xterm Terminal Emulator Summary

CHAPTER 3: Basic Bash Shell Commands

Starting the Shell Using the Shell Prompt Interacting with the Bash Manual Navigating the Filesystem Listing Files and Directories Handling Files Managing Directories Viewing File Contents Summary

CHAPTER 4: More Bash Shell Commands

Monitoring Programs Monitoring Disk Space Working with Data Files Summary

CHAPTER 5: Understanding the Shell

Investigating Shell Types Exploring Parent and Child Shell Relationships Understanding External and Built-In Commands Summary

CHAPTER 6: Using Linux Environment Variables

Exploring Environment Variables Setting User-Defined Variables Removing Environment Variables Uncovering Default Shell Environment Variables Setting the PATH Environment Variable Locating System Environment Variables Learning about Variable Arrays Summary

CHAPTER 7: Understanding Linux File Permissions

Exploring Linux Security Using Linux Groups Decoding File Permissions Changing Security Settings Sharing Files Access Control Lists Summary

CHAPTER 8: Managing Filesystems

Exploring Linux Filesystems Working with Filesystems Managing Logical Volumes Summary

CHAPTER 9: Installing Software

Exploring Package Management Inspecting the Debian-Based Systems The Red Hat–Based Systems Managing Software Using Containers Installing from Source Code Summary

CHAPTER 10: Working with Editors

Visiting the vim Editor Navigating the nano Editor Exploring the Emacs Editor Exploring the KDE Family of Editors Exploring the GNOME Editor Summary

Part II: Shell Scripting Basics

CHAPTER 11: Basic Script Building

Using Multiple Commands Creating a Script File Displaying Messages Using Variables Redirecting Input and Output Employing Pipes Performing Math Exiting the Script Working through a Practical Example Summary

CHAPTER 12: Using Structured Commands

Working with the if-then Statement Exploring the if-then-else Statement Nesting ifs Trying the test Command Considering Compound Testing Working with Advanced if-then Features Considering the case Command Working through a Practical Example Summary

CHAPTER 13: More Structured Commands

Looking at the for Command Trying the C-Style for Command Exploring the while Command Using the until Command Nesting Loops Looping on File Data Controlling the Loop Processing the Output of a Loop Working through a Few Practical Examples Summary

CHAPTER 14: Handling User Input

Passing Parameters Using Special Parameter Variables Being Shifty Working with Options Standardizing Options Getting User Input Working through a Practical Example Summary

CHAPTER 15: Presenting Data

Understanding Input and Output Redirecting Output in Scripts Redirecting Input in Scripts Creating Your Own Redirection Listing Open File Descriptors Suppressing Command Output Using Temporary Files Logging Messages Working through a Practical Example Summary

CHAPTER 16: Script Control

Handling Signals Running Scripts in Background Mode Running Scripts without a Hang-up Controlling the Job Being Nice Running like Clockwork Working through a Practical Example Summary

Part III: Advanced Shell Scripting

CHAPTER 17: Creating Functions

Exploring Basic Script Functions Returning a Value from a Function Using Variables in Functions Investigating Array Variables and Functions Considering Function Recursion Creating a Library Using Functions on the Command Line Working Through a Practical Example Summary

CHAPTER 18: Writing Scripts for Graphical Desktops

Creating Text Menus Doing Windows Getting Graphic Working Through a Practical Example Summary

CHAPTER 19: Introducing sed and gawk

Manipulating Text Looking at the sed Editor Basic Commands Working Through a Practical Example Summary

CHAPTER 20: Regular Expressions

Exploring Regular Expressions Defining BRE Patterns Trying Out Extended Regular Expressions Working Through Some Practical Examples Summary

CHAPTER 21: Advanced sed

Looking at Multiline Commands Holding Space Negating a Command Changing the Flow Replacing via a Pattern Placing sed Commands in Scripts Creating sed Utilities Working Through a Practical Example Summary

CHAPTER 22: Advanced gawk

Using Variables Working with Arrays Considering Patterns Structured Commands Printing with Formats Using Built‐in Functions Trying Out User‐Defined Functions Working Through a Practical Example Summary

CHAPTER 23: Working with Alternative Shells

Considering the Dash Shell Looking at the Dash Shell Features Scripting in Dash Exploring the zsh Shell Viewing Parts of the zsh Shell Scripting with zsh Working Through a Practical Example Summary

Part IV: Creating and Managing Practical Scripts

CHAPTER 24: Writing Simple Script Utilities

Performing Backups Managing Account Deletion Monitoring Your System Summary

CHAPTER 25: Getting Organized

Understanding Version Control Setting Up Your Git Environment Committing with Git Summary

APPENDIX A: Quick Guide to Bash Commands

Reviewing Built‐In Commands Looking at Common Bash Commands Assessing Environment Variables

APPENDIX B: Quick Guide to sed and gawk

The sed Editor The gawk Program

Index End User License Agreement

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