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https://www.apfeltalk.de/community/threads/problem-mit-launchd.521676/
https://eclecticlight.co/2018/05/22/running-at-startup-when-to-use-a-login-item-or-a-launchagent-launchdaemon/
https://apple.stackexchange.com/questions/256362/how-do-i-launch-an-app-at-boot-startup-on-sierra
https://forums.macrumors.com/threads/run-script-with-launchd-at-login.2035212/
https://developer.apple.com/library/archive/documentation/MacOSX/Conceptual/BPSystemStartup/Chapters/CreatingLaunchdJobs.html
https://superuser.com/questions/930389/how-to-start-a-service-using-mac-osxs-launchctl
https://medium.com/@fahimhossain_16989/adding-startup-scripts-to-launch-daemon-on-mac-os-x-sierra-10-12-6-7e0318c74de1
https://serverfault.com/questions/194832/how-to-start-stop-restart-launchd-services-from-the-command-line
https://github.com/nlf/dlite/issues/16
http://www.launchd.info/
https://stackoverflow.com/questions/43483920/launch-agent-not-starting
https://www.makeuseof.com/tag/hidden-launchdaemons-launchagents-mac/
http://osxdaily.com/2011/03/08/remove-an-agent-from-launchd/