Mastering Linux Shell Scripting - Second Edition: A practical guide to Linux command-line and shell scripting

Master the complexities of Bash shell scripting and unlock the power of shell for your enterprise

Key Features

Identify the high level steps such as verifying user input, using command lines and conditional statements in creating and executing simple shell scripts

Create and edit dynamic shell scripts to manage complex and repetitive tasks

Leverage command-line to bypass GUI and automate common tasks

Book Description

In this book, you'll discover everything you need to know to master shell scripting and make informed choices about the elements you employ. Get your systems updated to the latest Linux kernel and Bash shell to run your administration tasks efficiently. 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.

What you will learn

Use the type command to identify the order of command evaluation

Create interactive scripts that prompt for user input

Foster menu structures for operators with little command-line experience

Develop scripts that dynamically edit web configuration files to produce a new virtual host

Write scripts that use AWK to search and reports on log files

Draft effective scripts using functions as building blocks, reducing maintenance and build time

Make informed choices by comparing different script languages such as Perl and Python with BASH

Who This Book Is For

If you are a Linux administrator or a system administrator who is interested in automating tasks in their daily lives, saving time and effort then, this book is for you. Basic shell scripting and command-line experience would be needed. This book would do wonders if you are familiar with the tasks you need to automate.

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