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The Ultimate Linux Shell Scripting Guide

The Ultimate Linux Shell Scripting Guide

By : Donald A. Tevault
4.8 (5)
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The Ultimate Linux Shell Scripting Guide

The Ultimate Linux Shell Scripting Guide

4.8 (5)
By: Donald A. Tevault

Overview of this book

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.
Table of Contents (26 chapters)
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24
Other Books You May Enjoy
25
Index

Looking at Some Real-World Examples

I have some cool case studies on how to use sed, grep, and regular expressions in real life. So, read on and enjoy!

Modifying Multiple Files at Once

If you have more than one file that you need to modify in the same manner, you can have sed do them all in one command, just by using a * wildcard in the filename. Quite a few years ago I assisted a website maintainer in migrating a set of PHP-based websites from a CentOS 5 server to a CentOS 6 server. To make the sites work with the newer PHP version, she needed to add a line of new code to each .php file. That could have been a bit problematic, because she had about 2,000 files to modify, which is more than you’d want to edit manually. I suggested that she use sed to modify all files at once, and she knew immediately what I was talking about. (I jogged her memory by making the suggestion.)

Searching Through Apache Webserver Logs for Cross-site Scripting Attacks

About 15 years...

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