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Is there a way to keep iMac awake but let display sleep? Programs like Caffeine and Jiggler will keep the screen on and this is what I'd like to avoid.

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Other than tuning down the brightness to 0, you mean?

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i see! i guess that would work too if i can do it from a script... – Vasily Belokurov Nov 25 '10 at 11:06
Looks like you can do it: – o0'. Nov 25 '10 at 11:20

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