About the book: 2015 / The book you are holding in your hands has already become a bestseller in the West. It describes all the intricacies of working with the Linux operating system, system administration, and deep mechanisms that provide low-level Linux functionality. On the pages of this book you will acquire basic knowledge of working with the Linux kernel and the principles of proper operation of computer networks. The book also touches on the issues of programming shell scripts and handling the C language, covers topics of information security, virtualization and other irreplaceable things.