Bash is a common tool for everyday tasks that almost every Linux user relies on. Whatever you want to do, you have to log in to a shell, and most of the time, it will be Bash. This book aims to explain how to use this tool to get the most out of it, whether it be programming a plugin or network client or simply explaining why a double dot means what it means, we will dig a bit deeper than usual to become fully confident with our shell. Starting from the basics but with a different point of view, we will climb up step by step, focusing on the programming side of our environment, looking at how to prevent any issues in setting up our recurring tasks and ensure that everything works fine. Make it once, take your time, debug, improve, and then fire and forget; as in old Linux saying states, "If it works, why change it?" So, since we are dealing with sayings, we could stick to the other two cornerstones: "KISS: Keep it simple, stupid" and "Do only one thing, but do it well." These are three principles around which Linux revolves: making something, not everything, and making it simple and reliable and taking your time to make it work well so you do not have to modify it too often over time. When something is focused and simple, it is easy to understand, well maintained, and safe. And that is our approach, since Bash is not only a tool but also the environment we spend a lot of time in, and so understanding it, making the best use of it, and keeping everything clean and tidy should be our daily aim.
Mastering Bash
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Mastering Bash
By:
Overview of this book
System administration is an everyday effort that involves a lot of tedious tasks, and devious pits. Knowing your environment is the key to unleashing the most powerful solution that will make your life easy as an administrator, and show you the path to new heights. Bash is your Swiss army knife to set up your working or home environment as you want, when you want.
This book will enable you to customize your system step by step, making your own real, virtual, home out of it. The journey will take you swiftly through the basis of the shell programming in Bash to more interesting and challenging tasks. You will be introduced to one of the most famous open source monitoring systems—Nagios, and write complex programs with it in any languages. You’ll see how to perform checks on your sites and applications.
Moving on, you’ll discover how to write your own daemons so you can create your services and take advantage of inter-process communication to let your scripts talk to each other. So, despite these being everyday tasks, you’ll have a lot of fun on the way. By the end of the book, you will have gained advanced knowledge of Bash that will help you automate routine tasks and manage your systems.
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Current Title:
Mastering Bash
Table of Contents (15 chapters)
Preface
Free Chapter
Let's Start Programming
Operators
Quoting and Escaping
Menus, Arrays, and Functions
Iterations
Plug into the Real World
We Want to Chat
Subshells, Signals, and Job Controls
Lets Make a Process Chat
Living as a Daemon
Remote Connections over SSH
Its Time for a Timer
Customer Reviews