limitedheadroom

I used this workflow all the time on my laptop so I could prevent it from sleeping when running shows at work. Possibly one of the most useful workflows I have but now with a new computer and therefore forced to upgrade to El Capitan it no longer works. I'm also using Alfred 3 now, I don't know if that would make a difference. I simply don't understand how it works, while I'm perfectly able to go into terminal and activate or deactivate caffeinate I can't see how the workflow does it's thing so modifying it to work with OSX 10.11 is beyond me. Is anyone able to help?