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So I've checked in the past, and I could not find any information so I let it rest. I'm curious what OS X APIs are called in apps like iStat Menu or other system information apps? I could not find what functions to call to get CPU temp or fan speeds. Are these kexts or very specific Unix system calls? I would be very grateful for anyone with insight!

bj7
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    Is [How to get cpu temperature and fan speed on osx?](http://stackoverflow.com/questions/2216888/how-to-get-cpu-temperature-and-fan-speed-on-osx) out of date then? – Jongware May 26 '15 at 17:28
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    And googling `os x read fan speed site:stackoverflow.com` returns 1000 results – Peter M May 26 '15 at 17:29
  • Oh thank you! I did not see that when I previously searched! Perfect! – bj7 May 26 '15 at 17:29
  • I didn't actually know you could pass Google arguments specifying site? In the past when I queried I never got any useful information. Thanks for the tip – bj7 May 26 '15 at 17:31

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