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I would like to control the fan speed using terminal, if possible without third party app.

The idea is to automate and schedule different fan speed.

Kevin
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  • The third party apps must set or change some values - have you found out where these are stored? – Solar Mike Feb 18 '18 at 11:02
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    https://sourceforge.net/projects/lubbofancontrol/ might give you some ideas. Or http://www.insanelymac.com/forum/topic/299811-readsmc-for-efi-a-tool-to-enter-read-smc-keys-from-efi-shell-on-real-macs/ Or https://apple.stackexchange.com/questions/304678/reading-out-the-smc – WGroleau Feb 18 '18 at 11:16

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macOS does not support user control of the fan speed.

smcFanControl

The open source project smcFanControl claims to offer fan speed control. Be careful overriding Apple's fan behaviour; you risk damaging your computer.

Graham Miln
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