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Bash Quick Start Guide

You're reading from   Bash Quick Start Guide Get up and running with shell scripting with Bash

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Product type Paperback
Published in Sep 2018
Publisher Packt
ISBN-13 9781789538830
Length 186 pages
Edition 1st Edition
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Author (1):
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Tom Ryder Tom Ryder
Author Profile Icon Tom Ryder
Tom Ryder
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Table of Contents (10) Chapters Close

Preface 1. What is Bash? FREE CHAPTER 2. Bash Command Structure 3. Essential Commands 4. Input, Output, and Redirection 5. Variables and Patterns 6. Loops and Conditionals 7. Scripts, Functions, and Aliases 8. Best Practices 9. Other Books You May Enjoy

Summary

We use for loops to iterate through arguments or through ranges of numbers, and we use while loops to test conditions in the same way as if for more generic looping purposes, especially in the form of the while read -r idiom for reading files or command output line by line. Along with the use of the variables and arithmetic expressions from Chapter 5, Variables and Patterns, and the input- and output-redirection techniques from Chapter 4 Input, Output, and Redirection, we now have the building blocks to make all kinds of useful scripts in Bash.

In the next chapter, we'll look at the specifics of defining your own commands and scripts using these skills.

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