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Description
Shell scripts are an essential part of any modern operating system, such as UNIX, Linux, Windows, and similar. The scripting language or its syntax may vary from OS to OS; but the fundamental principles remain the same. I first encountered Linux Shell scripts during the development of embedded Linux product development. Shell scripts were initializing the complete product from the basic booting procedure until users logged in and a complete operating system was initialized. Another situation was in the automation of regular activities, such as the build and release management of source codes of very complex products, where more than 10,000 files were a part of a single project. Similarly, another very common requirement comes while using the make utility, which is used to compile and build complex product source codes.Initially, I had learned scripts to solve practical problems and customize already existing products. This book is the summary of what I have learned over the years in Linux Shell scripting during project development work, consultancy, and corporate trainings and their Q&A sessions.
In this book, you will learn about the very basics of Shell scripting to complex, customized automation. By the end of this book, you will be able to confidently use your own Shell scripts for the real-world problems out there. The idea is to be as practical as possible and give you the look and feel of what real-world scripting looks like.
This book covers bash, the GNU Bourne-Again Shell scripting. You can use the knowledge gained by reading this book for any shell of any of the UNIX flavors or distributions. You will need to take care of a few syntax changes if you are working in other shells, such as Korn, and similar. You should be able to read this book cover to cover, or you can just pick it up and read anything that you might find interesting. But perhaps most importantly, if you have a question about how to solve a particular problem or you need a hint, you will find it easy to find the right solution or something close enough to save your time and energy.
Content:-
Preface
Chapter 1: Getting Started and Working with Shell Scripting
Chapter 2: Drilling Deep into Process Management, Job Control, and Automation
Chapter 3: Using Text Processing and Filters in Your Scripts
Chapter 4: Working with Commands
Chapter 5: Exploring Expressions and Variables
Chapter 6: Neat Tricks with Shell Scripting
Chapter 7: Performing Arithmetic Operations in Shell Scripts
Chapter 8: Automating Decision Making in Scripts
Chapter 9: Working with Functions
Chapter 10: Using Advanced Functionality in Scripts
Chapter 11: System Startup and Customizing a Linux System
Chapter 12: Pattern Matching and Regular Expressions with sed and awk
Index
Author Details
"Ganesh Sanjiv Naik" is an author, consultant, and corporate trainer for embedded Android, embedded Linux, and Internet of Things related product development.
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