mandria

compatible UPS with USB plugged to the Qnap nas. 
 
Dowload WinNUT ( https://code.google.com/archive/p/winnut/downloads latest release is from years ago but works fin in latest win 10 build)
for mac and linux you can use package installer system (brew on mac and apt on some linux)
https://networkupstools.org/ for more details


Here the setting to control PC shutdown,
edito configuration file adding a line 

mandria

 dns-sd -q xxxx.local  (to get ip address forom a hostname in a local network)

mandria

After some trouble to boot icecast on mac osx with launchd this is the workaround i've used:

make an .sh that make start icecast ->

---

    #!/bin/bash
    sleep 5

mandria

javascript: (function(e, s) {
    e.src = s;
    e.onload = function() {
        jQuery.noConflict();
        console.log('jQuery injected');
    };
    document.head.appendChild(e);
})(document.createElement('script'), '//code.jquery.com/jquery-latest.min.js')