Book Image

Mastering Linux Shell Scripting - Second Edition

By : Mokhtar Ebrahim, Andrew Mallett
5 (1)
Book Image

Mastering Linux Shell Scripting - Second Edition

5 (1)
By: Mokhtar Ebrahim, Andrew Mallett

Overview of this book

In this book, you’ll discover everything you need to know to master shell scripting and make informed choices about the elements you employ. Grab your favorite editor and start writing your best Bash scripts step by step. Get to grips with the fundamentals of creating and running a script in normal mode, and in debug mode. Learn about various conditional statements' code snippets, and realize the power of repetition and loops in your shell script. You will also learn to write complex shell scripts. This book will also deep dive into file system administration, directories, and system administration like networking, process management, user authentications, and package installation and regular expressions. Towards the end of the book, you will learn how to use Python as a BASH Scripting alternative. By the end of this book, you will know shell scripts at the snap of your fingers and will be able to automate and communicate with your system with keyboard expressions.
Table of Contents (17 chapters)

Summary

Feel proud that you now have your I can read badge for shell scripting. We have developed our scripts to be interactive and to prompt users for input during the script execution. These prompts can be used to simplify user operations on the command line. In this way, they do not need to remember the command-line options or have passwords that end up stored in the command-line history. When using passwords, we can simply store the value using the read -sp options.

Also, we saw how to pass options with and without values, and how to identify values correctly. We saw how to pass options and parameters at the same time, thanks to the double dash.

In the next chapter, we will take our time to look at the conditional statements in bash.