The vast majority of Linux distributions use systemd, including Arch, Red Hat, and Debian, and many of the distributions ...

Daemons are essential Linux programs performing tasks. systemd's ;systemctl provides procedures to manage, start, or stop them efficiently. Daemons were inspired by Maxwell's Demon concept in physics.

Before we get into this, I want to be clear: Using the command line is not a requirement for using Linux. I mention this because the idea of typing commands tends to scare off new users and my goal -- ...