systemd

Link

https://systemd.io/

• Linux system component

Resources

• Service unit configuration
• Timers
• systemd user services
• systemd by example

  The playground allows you to learn about systemd interactively, right from your browser! Create examples without the danger of breaking your system, and without being distracted by hundreds of unrelated unit files.

• Rethinking PID 1 - systemd announcement

nspawn

• ArchWiki
• Debian Wiki
• Fedora Magazine (❗ dated article written 2016-06-28)

FAQ

List enabled timers and their next run date

systemctl list-timers