Learn Linux Shell Scripting – Fundamentals of Bash 4.4: A comprehensive guide to automating administrative tasks with the Bash shell

Sebastiaan Tammer

Dec 2018 · Packt Publishing Ltd

About this ebook

Create and maintain powerful Bash scripts for automation and administration.Key FeaturesGet up and running with Linux shell scripting using real-world examplesLeverage command-line techniques and methodologies to automate common yet complex administration tasksA practical guide with exposure to scripting constructs and common scripting patternsBook Description

Shell 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 learnUnderstand Linux and Bash basics as well as shell scripting fundamentalsLearn to write simple shell scripts that interact with Linux operating systemBuild, maintain, and deploy scripts in a Linux environmentLearn best practices for writing shell scriptsAvoid common pitfalls associated with Bash scriptingGain experience and the right toolset to write your own complex shell scriptsWho this book is for

This 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.

About the author

Sebastiaan Tammer is a Linux enthusiast from the Netherlands. After attaining his BSc in information sciences, he graduated with an MSc in business informatics, both from Utrecht University. His professional career started in Java development, before he pivoted into a Linux opportunity. Because of this dual background, he feels most at home in a DevOps environment. Besides working extensively with technologies such as Puppet, Chef, Docker, and Kubernetes, he has also attained the RHCE and OSCP certificates. He spends a lot of time in and around Bash. Whether it is creating complex scripting solutions or just automating simple tasks, there is hardly anything he hasn't done with Bash!