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The Ultimate Linux Shell Scripting Guide

You're reading from   The Ultimate Linux Shell Scripting Guide Automate, Optimize, and Empower tasks with Linux Shell Scripting

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Product type Paperback
Published in Oct 2024
Publisher Packt
ISBN-13 9781835463574
Length 696 pages
Edition 1st Edition
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Author (1):
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Donald A. Tevault Donald A. Tevault
Author Profile Icon Donald A. Tevault
Donald A. Tevault
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Table of Contents (26) Chapters Close

Preface 1. Getting Started with the Shell 2. Interpreting Commands FREE CHAPTER 3. Understanding Variables and Pipelines 4. Understanding Input/Output Redirection 5. Customizing the Environment 6. Text-Stream Filters – Part 1 7. Text Stream Filters – Part 2 8. Basic Shell Script Construction 9. Filtering Text with grep, sed, and Regular Expressions 10. Understanding Functions 11. Performing Mathematical Operations 12. Automating Scripts with here Documents and expect 13. Scripting with ImageMagick 14. Using awk – Part 1 15. Using awk – Part 2 16. Creating User Interfaces with yad, dialog, and xdialog 17. Using Shell Script Options with getops 18. Shell Scripting for Security Professionals 19. Shell Script Portability 20. Shell Script Security 21. Debugging Shell Scripts 22. Introduction to Z Shell Scripting 23. Using PowerShell on Linux 24. Other Books You May Enjoy
25. Index

Controlling Access to Your Scripts

A lot of the scripts that you create might be just for yourself or your co-workers. Or, they might be for general distribution to the public. In all of these cases, you might not need to worry about having any kind of access control on your scripts.

But, there might also be times when you need to create scripts that only certain people can access. The methods that you can use for this include:

  • Assigning sudo privileges
  • Assigning an Access Control List
  • Obfuscating plain-text scripts

We’ll begin by looking using sudo.

Assigning sudo Privileges

sudo is a handy security feature that is installed by default on macOS, OpenIndiana and most Linux distros. It’s also available for installation on most BSD-type distros and any Linux distros on which it isn’t installed by default. The most common way to use sudo is to allow non-privileged users to run programs with root user privileges. (You can...

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