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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 (8)
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The Ultimate Linux Shell Scripting Guide

The Ultimate Linux Shell Scripting Guide

4.9 (8)
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 (26 chapters)
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24
Other Books You May Enjoy
25
Index

Using tr

You can use tr for a variety of translation chores. (After all, tr does stand for translate.) Rather than translating from one language to another, tr translates from one character to another, from a range of characters to another, or from one class of characters to another. You can also delete selected characters from a file or eliminate duplicate characters.

Compared to the utilities that we’ve looked at so far, there’s a big difference with how tr operates. The other utilities that we’ve looked at so far can get their input from arguments that you would supply on the command-line. So, you don’t need to use the stdin redirector with them. The tr utility can’t use arguments, so you’ll either have to use a stdin redirector or pipe its input in from another command.

For the first example, create the file translation.txt, and use tr to change every occurrence of a single character. Make the file look like this:

[donnie@fedora...
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Tech Concepts
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The Ultimate Linux Shell Scripting Guide
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