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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
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25
Index
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Understanding root and sudo Privileges

Some of the things you’ll do in this course will require you to have administrative privileges. While it’s possible and convenient to just log into the root command prompt, that’s something that I like to discourage as much as possible. For best security, and to get used to what you’d be doing in an enterprise setting, your best bet is to use sudo.

Modern Linux distros allow you to add yourself to an administrators’ group as you install the operating system. (That’s the wheel group on Red Hat-type systems, and the sudo group on Debian/Ubuntu-type systems.) To run a command that requires administrative privileges, just do something like this:

sudo nftables list ruleset

You’ll then be asked to enter the password for your own user account, rather than the one for the root user account.

That’s about all we need to say about this topic, so let’s summarize and move on to the next chapter.

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