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Key benefits

•Identify high-level steps such as verifying user input

•Using the command line and conditional statements in creating/executing simple shell scripts

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

•Leverage the command-line to bypass GUI and automate common tasks

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. 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.

What you will learn

•Make, execute, and debug your first Bash script

•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 Python with BASH

What do you get with eBook?

Instant access to your Digital eBook purchase

Download this book in EPUB and PDF formats

Access this title in our online reader with advanced features

DRM FREE - Read whenever, wherever and however you want

AI Assistant (beta) to help accelerate your learning

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N/A Feb 19, 2024

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Chancy Rendezvous Oct 31, 2023

They use relatively advanced features (e.g. conditional looping) to illustrate introductory topics (parameter passing) LONG before they are covered. It's very frustrating. And I use Linux daily and BSD often -- pretty comfortable with one-liners -- so the concepts are not completely foreign to me.I will probably use it as a reference, since it can't be returned. There's a lot in here, but it isn't presented effectively.

Amazon Verified review

Balint Biermann Jun 26, 2023

Precise and well understandable, good amount of knowledge for its length

Pablo Lema Mar 30, 2023

It is not a particularly engaging book, like some of its counterparts coming from other prints, like "No Starch Press". Its kind of the deal with PACKT, they put out boring books. Technically correct and you will learn plenty, but it will be a slog.Point of fact is the end section of this book. It is all about AWK which is basically a Bash application but boy does that definition not do it justice, it literally has other whole books dedicated to it. I would rather this entire section had been cut. It is not covered methodically enough, or in enough depth to really grasp, its feels like unnecessary padding and it made finishing the book (again) a slog.PACKT books have such potential, but its the kind of book you read because you have to learn something specific, not for the joy of it like you can with other, even heavily technical books. Its just their brand.

Mr. Matthew D. Black Dec 18, 2022

Poor indenting, syntax errors, half-way through still no explanation of how to cope with parameters "that have spaces". Poor.

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

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