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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

Getting information about Linux- and Unix-specific header files

There are a lot of specific functions and header files for Linux and other Unix systems. Generally speaking these are POSIX functions, even though some are Linux-specific, such as sysinfo(). We have already seen two of the POSIX files in the previous recipe: unistd.h and sys/types.h. Since they're POSIX files, they're available in all Unix-like systems such as Linux, FreeBSD, OpenBSD, macOS, and Solaris.

In this recipe, we will learn more about these POSIX header files, what they do, and when and how you can use them. We will also learn how to look up information about these files in the manual page.

Getting ready

In this recipe, we will look up header files in the manual. If you are using a Fedora-based system, such as CentOS, Fedora, or Red Hat, these manual pages are already installed on your system. If for some reason they are missing, you can install them with dnf install man-pages as root, or with...

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