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The Ultimate Linux Shell Scripting Guide
The Ultimate Linux Shell Scripting Guide

The Ultimate Linux Shell Scripting Guide: Automate, Optimize, and Empower tasks with Linux Shell Scripting

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The Ultimate Linux Shell Scripting Guide

Interpreting Commands

To fulfill its job as the interface between the user and the operating system kernel, a shell has to perform five different functions. These functions include interpreting commands, setting variables, enabling input/output redirection, enabling pipelines, and allowing customization of a user’s working environment. In this chapter, we’ll look at how bash and zsh interpret commands. As an added bonus, much of what we’ll cover in the next few chapters will also help you prepare for certain Linux certification exams, such as the Linux Professional Institute or CompTIA Linux+ exams.

Topics in this chapter include:

  • Understanding the structure of a command
  • Executing multiple commands at once
  • Running commands recursively
  • Understanding the command history
  • Escaping and quoting

To follow along, you can use pretty much any Linux distro that you desire, as long as it’s running with either bash or...

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Key benefits

  • Embrace Bash, Zsh, and PowerShell across Linux, macOS, Unix
  • Seamlessly progress through chapters with conceptual explanations, illustrative examples, and immersive labs for hands-on skill development
  • Build real-world Linux administration scripts, enhancing your troubleshooting and management skills

Description

Embark on a comprehensive journey through command shells with this hands-on manual. While Bash is a Linux staple, Z shell and PowerShell are rising stars, applicable to Linux, macOS, and Unix. Progress seamlessly through chapters, each building on the last, creating a solid foundation. Learn through a unique approach: concepts, examples, and interactive labs. These labs, nearly a hundred strong, form the core of experiential learning, essential for script creation. Focusing on Linux commands and their scripting applications, this manual is universally relevant across Linux and select Unix-like systems. It goes beyond theory, offering practical scripts for real-world Linux administration. Scripts are designed for manageability, aiding learning and troubleshooting. The goal is to nurture the ability to craft intelligent, functional shell scripts. While centered on Bash, this book offers a peek into the future with Z Shell and PowerShell, expanding your skills and adaptability. This book is systematically structured and engaging so that it will guide you to master command shells, equipping you for real-world Linux challenges.

Who is this book for?

This book is for programmers who use the command line on Unix and Linux servers already, but don't write primarily in Bash. This book is ideal for programmers who've been using a scripting language such as Python, JavaScript or PHP, and would like to understand and use Bash more effectively. It’s also great for beginning programmers, who want to learn programming concepts.

What you will learn

  • Grasp the concept of shells and explore their diverse types for varied system interactions
  • Master redirection, pipes, and compound commands for efficient shell operations
  • Leverage text stream filters within scripts for dynamic data manipulation
  • Harness functions and build libraries to create modular and reusable shell scripts
  • Explore the basic programming constructs that apply to all programming languages
  • Engineer portable shell scripts, ensuring compatibility across diverse platforms beyond Linux
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Oct 18, 2024
Length: 696 pages
Edition : 1st
Language : English
ISBN-13 : 9781835463574
Vendor :
Linux Foundation
Category :
Languages :
Concepts :
Tools :

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Publication date : Oct 18, 2024
Length: 696 pages
Edition : 1st
Language : English
ISBN-13 : 9781835463574
Vendor :
Linux Foundation
Category :
Languages :
Concepts :
Tools :

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Table of Contents

25 Chapters
Getting Started with the Shell Chevron down icon Chevron up icon
Interpreting Commands Chevron down icon Chevron up icon
Understanding Variables and Pipelines Chevron down icon Chevron up icon
Understanding Input/Output Redirection Chevron down icon Chevron up icon
Customizing the Environment Chevron down icon Chevron up icon
Text-Stream Filters – Part 1 Chevron down icon Chevron up icon
Text Stream Filters – Part 2 Chevron down icon Chevron up icon
Basic Shell Script Construction Chevron down icon Chevron up icon
Filtering Text with grep, sed, and Regular Expressions Chevron down icon Chevron up icon
Understanding Functions Chevron down icon Chevron up icon
Performing Mathematical Operations Chevron down icon Chevron up icon
Automating Scripts with here Documents and expect Chevron down icon Chevron up icon
Scripting with ImageMagick Chevron down icon Chevron up icon
Using awk – Part 1 Chevron down icon Chevron up icon
Using awk – Part 2 Chevron down icon Chevron up icon
Creating User Interfaces with yad, dialog, and xdialog Chevron down icon Chevron up icon
Using Shell Script Options with getops Chevron down icon Chevron up icon
Shell Scripting for Security Professionals Chevron down icon Chevron up icon
Shell Script Portability Chevron down icon Chevron up icon
Shell Script Security Chevron down icon Chevron up icon
Debugging Shell Scripts Chevron down icon Chevron up icon
Introduction to Z Shell Scripting Chevron down icon Chevron up icon
Using PowerShell on Linux Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

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A. Zubarev Oct 24, 2024
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book is probably one of, if not the most, comprehensive of all on the capabilities of scripting on Linux.It covers all the common scripting shells, even PowerShell (who knew it would be possible to run Microsoft's shell on Linux?!), methods of securing scripts, text manipulation, advanced scripting techniques including automation, shell configuration, error handling, piping and much more.I especially liked the chapters on image manipulations and creating user interfaces.Be aware that this book assumes you are scripting for an on-prem resident machine and it is probably the only shortcoming I can mention.
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