Print status information for a daemon

[FranklinYu (Franklin Yu)]

Ideally I would like something similar to systemctl status in systemd. I’m not sure whether everything is available though; I guess we can parse the output of launchctl print and get some information.

The PID from launchctl print doesn’t look like the real daemon (at least it’s the case for Apache HTTP Server), but the daemondo process instead. The real PID locates at

/opt/local/var/run/apache2/httpd.pid

for Apache. I’m not sure whether it’s equivalent to show the status (running/error/not-loaded) of the daemondo process instead of the real one; showing daemondo process sounds more generic.