Learn Linux Shell Scripting – Fundamentals of Bash 4.4

Shell scripting is one of the most common and powerful ways to automate tasks in a Linux / Unix environment. With the help of real-world exercises, you will learn to leave the GUI behind, automate tasks, and unlock the true power of Bash.

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Create and maintain powerful Bash scripts for automation and administration.

Key Features

Get up and running with Linux shell scripting using real-world examples
Leverage command-line techniques and methodologies to automate common yet complex administration tasks
A practical guide with exposure to scripting constructs and common scripting patterns

Book DescriptionShell scripts allow us to program commands in chains and have the system execute them as a scripted event, just like batch files. This book will start with an overview of Linux and Bash shell scripting, and then quickly deep dive into helping you set up your local environment, before introducing you to tools that are used to write shell scripts. The next set of chapters will focus on helping you understand Linux under the hood and what Bash provides the user. Soon, you will have embarked on your journey along the command line. You will now begin writing actual scripts instead of commands, and will be introduced to practical applications for scripts. The final set of chapters will deep dive into the more advanced topics in shell scripting. These advanced topics will take you from simple scripts to reusable, valuable programs that exist in the real world. The final chapter will leave you with some handy tips and tricks and, as regards the most frequently used commands, a cheat sheet containing the most interesting flags and options will also be provided.

After completing this book, you should feel confident about starting your own shell scripting projects, no matter how simple or complex the task previously seemed. We aim to teach you how to script and what to consider, to complement the clear-cut patterns that you can use in your daily scripting challenges.

What you will learn

Understand Linux and Bash basics as well as shell scripting fundamentals
Learn to write simple shell scripts that interact with Linux operating system
Build, maintain, and deploy scripts in a Linux environment
Learn best practices for writing shell scripts
Avoid common pitfalls associated with Bash scripting
Gain experience and the right toolset to write your own complex shell scripts

Who this book is forThis book targets new and existing Linux system administrators, Windows system administrators or developers who are interested in automating administrative tasks. No prior shell scripting experience is needed but in case you do this book will make a pro quickly. Readers should have a basic understanding of the command line.