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)

Technical requirements

For this chapter, you will need a computer with Linux already set up. It doesn't matter if it's a local machine or a remote machine. The particular distribution you use doesn't matter much either. We'll look at how to install the necessary programs in Debian-based distributions, as well as Fedora-based distributions. Most of the major Linux distributions are either Debian-based or Fedora-based.

You'll also be using a text editor a lot. Which one you choose is a matter of taste. The two most common are vi and nano, and they are available pretty much everywhere. We won't cover how to use a text editor in this book, though.

The C files for this chapter can be downloaded from https://github.com/PacktPublishing/Linux-System-Programming-Techniques/tree/master/ch1. The filenames on GitHub correspond to the filenames in this book.

You can also clone the entire repository to your computer. The files for this chapter are in the ch1...