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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

Using sort

This is a versatile utility that you can use by itself, or in conjunction with other utilities. You can use it to sort either one file, or multiple files together.

There are lots of options for different purposes. You can choose how to format your output, how you want the data sorted, and what fields you want to use for the sort. You can even perform sorts on two or more fields at once, with the primary sort on one field and secondary sorts on others.

There are a lot of ways that you can use sort. As I’ve said before, the only limitation is your own imagination. To start, look at the following diagram. Create the text file on your own machine and then run the commands that you see:

Figure 6.7: Sorting the actorfile_1.txt file

What you see in the above diagram is the simplest of sorts. By default, sorts are case-sensitive and are performed on each entire line of the input file.

In the next example, I’ll show you two options at once...

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