2023
https://faun.pub/systemctl-command-detailed-explanation-and-use-tutorial-504306cdd4a8
2021
https://seb.jambor.dev/posts/systemd-by-example-part-1-minimization/
https://habr.com/ru/post/536040/
https://habr.com/ru/post/535930/
https://habr.com/ru/post/535872/
2019
https://max-ko.ru/10-systemd-chast-2-upravlenie-junitami-zavisimostjami-i-celjami.html
https://max-ko.ru/9-systemd-i-junity.html