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How can I return the temperatures, fan speeds, etc, using Terminal?

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2 Answers 2

up vote 3 down vote accepted

This website claims to have a free commandline tool to monitor temperature sensors.

http://www.bresink.de/osx/0TemperatureMonitor/details.html

tempmonitor command-line tool

Temperature Monitor

version for the BSD command-line of Mac OS X, temperature sensors only

yes

(Name of tool; part of package download; description; free of charge?)

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Wow, that tool is awesome! Funnily the guy who coded it was my computer graphics teaching assistent a decade ago :) –  Stefan Schmidt Jun 19 '12 at 18:56
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Here's a website with a script:

http://hints.macworld.com/article.php?story=20051021115356696

While hunting around in ioreg I found a bunch of hardware sensor readouts, including CPU and GPU temperatures. I had no idea this stuff was available without a compiled app, so I excitedly whipped up a bash script (tp v0.1) to display the values.

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Might have worked in 2005, but returns nothing on mid 2010 iMac with Lion. Looking at the script, ioreg -n IOHWSensor will not return expected values. –  koiyu Oct 1 '11 at 15:19
    
@koiyu - I agree. I'll delete this answer. (It'd be useful if it got another two downvotes.) –  DanBeale Oct 1 '11 at 15:58
    
@Dan, there you go, 1 more down vote. –  Alex Oct 2 '11 at 4:13
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