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So I noticed a temperature monitor cleverly labeled "Ambient." Knowing that the sensor is inside my computer, I can get a decent temperature check on my overly hot dorm room if I check it as soon as I wake my computer from sleep. I was curious if there was some way of logging temperature data for different parts of the day, ignoring the times where the processors are making the ambient temperature rise?

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Why not just buy a thermometer? – John Gardeniers Mar 24 '11 at 10:57

I'm sure it's possible via SNMP. There are plenty of guides on the Internet how to set up SNMP on OS X, including this one: from Apple.

The next way would be to set up mrtg/cacti to monitor the sensor.

If you're looking for a GUI utility, you can for example Temperature Monitor

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