Robert M. Koretsky 
Raspberry Pi OS System Administration with systemd 
A Practical Approach

The first in a new series exploring the basics of Raspberry Pi Operating System administration, for the novice user Provides a guide to the use of systemd to ensure that the Linux kernel works efficiently and effectively to provide three foundation stones of computer operation and management: computer system concurrency, virtualization, and secure persistence Exercises are included throughout to reinforce the readers’ learning goals with solutions and example code provided Can also be adopted in a more formal learning environment to supplement and extend the basic knowledge of a Linux operating system