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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

Making the new daemon a systemd service

Now that we've made a new-style daemon in the previous recipe, we'll see that it's even easier to make a unit file for this daemon.

Knowing how to write unit files to new-style daemons is important since more and more daemons are written this way. When making new daemons for Linux, we should make them in this new style.

Getting ready

For this recipe, you'll need to complete the previous one. It's the daemon from that recipe that we'll use here.

How to do it...

Here, we will make the new-style daemon a systemd service:

  1. Let's begin by moving the daemon to /usr/local/sbin, just as we did with the traditional daemon. Remember, you'll need to be root for this:
    $> sudo mv new-style-daemon /usr/local/sbin/
  2. Now we'll write the new unit file. Create the /etc/systemd/system/new-style-daemon.service file and give it the following content. Remember, you'll need to be root to create...
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