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'll need the GBD tool, Valgrind, the GCC compiler, a generic Makefile, and the Make tool.

If you haven't installed GDB and Valgrind yet, you can do so now. Follow these instructions depending on your distributions. If you don't have sudo installed or don't have sudo privileges, you can switch to root using su instead (and leave out the sudo part).

For Debian and Ubuntu systems, run the following command:

$> sudo apt-get install gdb valgrind

For CentOS, Fedora, and Red Hat systems, run the following command:

$> sudo dnf install gdb valgrind

All the code samples for this chapter can be found on GitHub at https://github.com/PacktPublishing/Linux-System-Programming-Techniques/tree/master/ch12.

Check out the following link to see the Code in Action videos: https://bit.ly/2TTiIPp