I'm using more and more Applescripts for home automation that rely on System Events being active. The problem is that System Events shuts down if it hasn't been used for a while. I'm not sure how long the time is though. 15 min? 5 min? Regardless... if System Events isn't active, there's either a pause or an error while it launches, meanwhile I wonder what happened. I don't want to build delays into the Applescripts because many of them are for remote control type actions (imagine if your TV required a 10 second delay every time you tried to use your remote. That'd be annoying).

Is there a way to keep System Events active? Is there a reason to NOT keep System Events active?

I'm on Mavericks, if that matters.

1 Answer 1


Save this plist as ~/Library/LaunchAgents/systemevents.plist:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <string>/System/Library/CoreServices/System Events.app/Contents/MacOS/System Events</string>

Then run launchctl load ~/Library/LaunchAgents/systemevents.plist.

It doesn't fix the glitches in the QuickHue script though. I was probably wrong when I said that the error was caused by System Events not being open.

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