In this chapter, we touched on some of the very basics of the shell, such as things that you should know how to deal with in the correct way. Failing to preserve variable names can, for instance, lead us to unwanted results and, on a different side, knowing how to access environment variables will help us create a better environment for our day-to-day tasks. As we said, basic but important things that a Bash master should know by heart, because unmasks, file descriptors, and fiddling with variables are what let you play awesome tricks and are the building blocks to becoming more advanced. So, do not just overlook them; they will help you.
Mastering Bash
By :
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