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Linux Shell Scripting Essentials

Linux Shell Scripting Essentials

By : Sinny Kumari
4.5 (2)
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Linux Shell Scripting Essentials

Linux Shell Scripting Essentials

4.5 (2)
By: Sinny Kumari

Overview of this book

Shell scripting is a quick method to prototype complex applications or problems. Shell scripts are a collection of commands to automate tasks, usually those for which the user has a repeated need, when working on Linux-based systems. Using simple commands or a combination of them in a shell can solve complex problems easily. This book starts with the basics, including essential commands that can be executed on Linux systems to perform tasks within a few nanoseconds. You’ll learn to use outputs from commands and transform them to show the data you require. Discover how to write shell scripts easily, execute script files, debug, and handle errors. Next, you’ll explore environment variables in shell programming and learn how to customize them and add a new environment. Finally, the book walks you through processes and how these interact with your shell scripts, along with how to use scripts to automate tasks and how to embed other languages and execute them.
Table of Contents (10 chapters)
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9
Index

Summary


After reading this chapter, you will understand what process is in a Linux and UNIX-based system. You should now know how to create, stop, terminate, and monitor processes. You should also know how to send signals to a process and manage the received signals in your shell script with the trap command. You have also learned how different processes communicate with each other using IPC on mechanism in order to share resources or to send and receive messages.

In the next chapter, you will learn about the different ways in which tasks can be automated and how they run at a specified time without any further human intervention. You will also learn how and why start-up files are created, and how to embed other programming languages such as Python in a shell script.

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