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  • Book Overview & Buying The Ultimate Linux Shell Scripting Guide
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The Ultimate Linux Shell Scripting Guide

The Ultimate Linux Shell Scripting Guide

By : Donald A. Tevault
4.9 (7)
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The Ultimate Linux Shell Scripting Guide

The Ultimate Linux Shell Scripting Guide

4.9 (7)
By: Donald A. Tevault

Overview of this book

Dive into the world of Linux shell scripting with this hands-on guide. If you’re comfortable using the command line on Unix or Linux but haven’t fully explored Bash, this book is for you. It’s designed for programmers familiar with languages like Python, JavaScript, or PHP who want to make the most of shell scripting. This isn’t just another theory-heavy book—you’ll learn by doing. Each chapter builds on the last, taking you from shell basics to writing practical scripts that solve real-world problems. With nearly a hundred interactive labs, you’ll gain hands-on experience in automation, system administration, and troubleshooting. While Bash is the primary focus, you'll also get a look at Z Shell and PowerShell, expanding your skills and adaptability. From mastering command redirection and pipelines to writing scripts that work across different Unix-like systems, this book equips you for real-world Linux challenges. By the end, you'll be equipped to write efficient shell scripts that streamline your workflow and improve system automation.
Table of Contents (27 chapters)
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26
Index

Understanding the Unique Features of zsh Scripting

When you script in zsh, you can take advantage of certain enhancements that aren’t in bash. Here’s a quick review of some of those enhancements.

Differences in Variable Expansion

In Chapter 8—Basic Shell Script Construction, I explained the concept of variable expansion, which is also sometimes called parameter expansion. This allows you to write cool scripts that do cool things, such as changing the filename extensions on a whole batch of files at a time. Most of the same variable expansion constructs that are in bash are also in zsh, but zsh has additional ones that provide additional capabilities. Let’s look at a few examples.

Substituting Values

Substituting values in zsh works the same as it does in bash, with one exception. That is, if you substitute a value in a text string that includes an exclamation point, you’ll have to escape it in a zsh script. For example, here’...

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