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Linux System Programming Techniques

You're reading from   Linux System Programming Techniques Become a proficient Linux system programmer using expert recipes and techniques

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Product type Paperback
Published in May 2021
Publisher Packt
ISBN-13 9781789951288
Length 432 pages
Edition 1st Edition
Tools
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Author (1):
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Jack-Benny Persson Jack-Benny Persson
Author Profile Icon Jack-Benny Persson
Jack-Benny Persson
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Table of Contents (14) Chapters Close

Preface 1. Chapter 1: Getting the Necessary Tools and Writing Our First Linux Programs 2. Chapter 2: Making Your Programs Easy to Script FREE CHAPTER 3. Chapter 3: Diving Deep into C in Linux 4. Chapter 4: Handling Errors in Your Programs 5. Chapter 5: Working with File I/O and Filesystem Operations 6. Chapter 6: Spawning Processes and Using Job Control 7. Chapter 7: Using systemd to Handle Your Daemons 8. Chapter 8: Creating Shared Libraries 9. Chapter 9: Terminal I/O and Changing Terminal Behavior 10. Chapter 10: Using Different Kinds of IPC 11. Chapter 11: Using Threads in Your Programs 12. Chapter 12: Debugging Your Programs 13. Other Books You May Enjoy

Using job control in Bash

Not only will job control give you a better understanding of foreground and background processes, but it will also make you more efficient when working on a terminal. Being able to put a process in the background frees up your terminal to do other tasks.

Getting ready

Nothing particular is required for this recipe, except for the Bash shell. Bash is most often the default shell, so it's likely that you already have it installed.

How to do it…

In this recipe, we will start and stop several processes, send them to the background, and bring them back to the foreground. This will give us an understanding of background and foreground processes. Let's get started:

  1. Previously, we have seen how to start a process in the background with an ampersand (&). We will repeat that here, but we will also list the current jobs running and bring one of them to the foreground. The first background process we'll start here is sleep...
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