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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
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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

Chapter 7: Using systemd to Handle Your Daemons

Now that we know how to build our own daemons, it's time to see how we can get Linux to handle them using systemd. In this chapter, we will learn what systemd is, how to start and stop services, what unit files are, and how to create them. We will also learn how daemons are logged to systemd and how we read those logs.

We will then learn about different kinds of services and daemons that systemd can handle and put the daemon from the previous chapter under systemd control.

In this chapter, we'll cover the following recipes:

  • Getting to know systemd
  • Writing a unit file for a daemon
  • Enabling and disabling a service—and starting and stopping it
  • Creating a more modern daemon for systemd
  • Making the new daemon a systemd service
  • Reading the journal
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