We’ve explored looking at processes directly using tools like ps; another way to look at the processes running on a system is from the daemon perspective. A daemon is a long-running process which operates in the background of a system; often they’re automatically started on system start by an init program like systemd. The “d” in systemd comes from the concept of daemon, as it acts as a controller for all daemons running on the system.
systemd is a scheduling system which has become widely used across Linux distributions. It is often the subject of both praise and criticism. Its ...