Unix/Linux plays a crucial role today in the practical use of system platforms. In this book, you will find a quick introduction to system programming. Alongside the fundamentals and concepts, you will learn the essential system calls. You will discover how Unix/Linux is structured and how to use the standard components to create your own system programs. This includes script programming, Unix processes, interprocess communication and synchronization, the Unix file system, distributed systems, scheduling, and memory management. The concepts are explained and deepened through application scenarios and runnable code examples, allowing you not only to understand the basics but also to assess their practical potential. The book is suitable for self-study as well as for use in teaching and training.