11. Managing Ubuntu systemd Units
In order to gain proficiency in Ubuntu system administration it is important to understand the concepts of systemd units with a particular emphasis on two specific types known as targets and services. The goal of this chapter, therefore, is to provide a basic overview of the different systemd units supported by Ubuntu combined with an overview of how to configure the many services that run in the background of a running Linux system.
11.1 Understanding Ubuntu systemd Targets
Ubuntu can be configured to boot into one of a number of states (referred to as targets), each of which is designed to provide a specific level of operating system functionality. The target to which a system will boot by default is configured ...
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