Book Image

Linux System Programming Techniques

By : Jack-Benny Persson
Book Image

Linux System Programming Techniques

By: Jack-Benny Persson

Overview of this book

Linux is the world's most popular open source operating system (OS). Linux System Programming Techniques will enable you to extend the Linux OS with your own system programs and communicate with other programs on the system. The book begins by exploring the Linux filesystem, its basic commands, built-in manual pages, the GNU compiler collection (GCC), and Linux system calls. You'll then discover how to handle errors in your programs and will learn to catch errors and print relevant information about them. The book takes you through multiple recipes on how to read and write files on the system, using both streams and file descriptors. As you advance, you'll delve into forking, creating zombie processes, and daemons, along with recipes on how to handle daemons using systemd. After this, you'll find out how to create shared libraries and start exploring different types of interprocess communication (IPC). In the later chapters, recipes on how to write programs using POSIX threads and how to debug your programs using the GNU debugger (GDB) and Valgrind will also be covered. By the end of this Linux book, you will be able to develop your own system programs for Linux, including daemons, tools, clients, and filters.
Table of Contents (14 chapters)

Chapter 1: Getting the Necessary Tools and Writing Our First Linux Programs

In this chapter, we'll install the necessary tools on our Linux system, such as GCC, GNU Make, GDB, and Valgrind. We'll also try them out and see how they work. Knowing how to use these tools is the key to being a fast and efficient developer. We'll then write our first programs—Linux style. By understanding the different parts of a C program, you can easily interact with the rest of the system in a best practice manner. After that, we'll learn how to use the built-in manual pages (man pages for short) to look up commands, libraries, and system calls—a skill that we'll need a lot throughout this book. Knowing how to look up things in the relevant built-in manual page is often much faster—and more precise—than searching the internet for answers.

In this chapter, we are going to cover the following recipes:

  • Installing GCC and GNU Make
  • Installing...