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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

Summary

In this chapter, I didn’t introduce a lot of new scripting concepts as I normally do. Instead, I showed you how to use the concepts that you already know to create scripts that might be useful to a security-conscious administrator. You’ve seen how to create shell scripts that can do simple port scans or operating system identification. Then, you saw how to create auditing scripts that can show if the root user account is enabled, when a normal user is logging into the system, and what a normal user is doing with his or her sudo privileges. After that, I showed you a script that can read a list of IP addresses, and automatically create firewall rules to block those addresses. Finally, I showed you some tips about how to find and use scripts that other people have already created.

In the next chapter, we’ll talk a bit about shell script portability. I’ll see you there.

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