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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

Hands-on Lab – Pipes, Redirectors, and find

For this assignment, you’ll be working with pipes and redirectors. To see the full effect of this exercise, you’ll need to be logged in as a normal user, and not as root.

  1. Enter the following, noting that you’re deliberately typing the name of a non-existent directory in order to generate an error message.
    find /far -iname '*'
    
  2. Note the output, and then enter:
    find /far -iname '*' 2> error.txt
    cat error.txt
    
  3. Create a listing of files and see how many there are, by entering:
    find / -iname '*.txt' > filelist.txt 2> error_2.txt
    find / -iname '*.txt' 2> /dev/null | wc -l
    less filelist.txt
    less error_2.txt
    

If you’re logged on as a normal user instead of as root, this should generate some error messages about the fact that you don’t have permission to look in certain directories...

CONTINUE READING
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Tech Concepts
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Programming languages
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The Ultimate Linux Shell Scripting Guide
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