Linux is the one of the most powerful and universally adopted OSes. Shell is a program that gives the user direct interaction with the operating system. Scripts are collections of commands that are stored in a file. The shell can read this file and act on the commands as if they were typed on the keyboard. Shell scripting is used to automate day-to-day administration, and for testing or product development tasks.

This book covers Bash, GNU Bourne Again SHell, preparing you to work in the exciting world of Linux shell scripting. We start with an introduction to the Shell environment and explain basic commands used in Shell. Next we move on to check, kill, and control the execution of processes in Linux OS. Further, we teach you about the filter tools available in Linux and explain standard output and standard errors devices.
Then we will ensure you understand Shell’s interpretation of commands and get a firmer grasp so you use them in practice. Next, you’ll experience some real-world essentials such as debugging and perform Shell arithmetic fluently. Then you’ll take a step ahead and learn new and advanced topics in Shell scripting, such as starting up a system and customizing a Linux system. Finally, you’ll get to understand the capabilities of scripting and learn about Grep, Stream Editor, and Awk.

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Spis treści

Learning Linux Shell Scripting. Unleash the power of shell scripts to solve real-world problems by breaking through the practice of writing tedious code eBook -- spis treści

• 1. Getting Started and Working with Shell Scripting
• 2. Drilling Deep into Process Management, Job control, and Automation
• 3. Configuring Your Scripts
• 4. Working with Commands
• 5. Exploring Expressions and Variables
• 6. Neat Tricks with Shell Scripting
• 7. Doing Arithmetics in Shell Scripts
• 8. Automating Decision Making in Scripts
• 9. Working with Functions
• 10. Using Advanced Functionality in Scripts
• 11. System Start-up and Customizing a Linux System
• 12. Understanding Pattern Matching and Regular Expressions