check macbook pro temperature by terminal

I cannot enter because membership costs 99$/year!

I came across this thread while looking for a CLI temperature monitor, and the last reply solved my problem.

tempmonitor is also not dependent on any of the other resources from that app, so you can copy it out to wherever you want, which is very useful.

FYI, I'm using OS 10.7.3 on an i7 MBA and it reads 11 sensors. Awesome. 🙂

Really disappointing that a.) there seems to be no "native" way of reading this simple values via command line (at least not openly documented in the Mac Developer Library) and b.) nobody seems to get the thread openers question 😕

a) There is nothing "simple" about IOKit

b) There are numerous, excellent answers in this thread from people who obviously understand this original poster's question

c) This is from 2010

Just released this ruby gem that lets you see the CPU temperature via the command-line.

https://github.com/Chris911/iStats

gem install iStats

This is great. Thanks.

If you are running Mountain Lion or Mavericks, instead of Snow Leopard, the following may help.

In terminal, install this Ruby gem:

sudo gem install iStats

You may get an unable to convert “xCA” message during the install, but it does not effect functionality.

iStats -h or just iStats

Output on 2014 MacBook Air (OS X 10.9.4)

I tried to install and got this in the terminal (OS10.9.4, MacPro6,1):

Fetching: sparkr-0.4.1.gem (100%)

Successfully installed sparkr-0.4.1

Fetching: iStats-0.0.9.gem (100%)

Building native extensions. This could take a while...

ERROR: Error installing iStats:

ERROR: Failed to build gem native extension.

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb

mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/include/rub y.h

Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/iStats-0.0.9 for inspection.

Results logged to /Library/Ruby/Gems/2.0.0/gems/iStats-0.0.9/ext/osx_stats/gem_make.out

I am using OS X 10.9.4. Recent Apple compiler technology. Apple supplied Ruby version is 2.0.0p451. Do you have all of these ingredients.

sudo gem install iStats

When I installed iStats v0.0.9, I had just downloaded the Command Line Tools (OS X 10.9) for Xcode Late July 2014 (Jul 21.). I just removed this version of iStat (sudo gem uninstall iStats), and then reinstalled it with the same release of command line tools. This is my output, which I expected, and it still functions normally when run:

odin: ~$ sudo gem install iStats

Fetching: iStats-0.0.9.gem (100%)

Building native extensions. This could take a while...

Successfully installed iStats-0.0.9

Parsing documentation for iStats-0.0.9

unable to convert "\xCA" from ASCII-8BIT to UTF-8 for ext/osx_stats/osx_stats.bundle, skipping

unable to convert "\xCA" from ASCII-8BIT to UTF-8 for ext/osx_stats/smc.o, skipping

unable to convert "\xCA" from ASCII-8BIT to UTF-8 for lib/osx_stats.bundle, skipping

Installing ri documentation for iStats-0.0.9

1 gem installed

Removing iStats gem again, I updated to the Command Line Tools (OS X 10.9) for Xcode Late August (Aug 18). The reinstallation process of iStats v0.0.9 produced identical output to the above, and a working iStats application.

Using the Ruby Version Manager (RVM) and Ruby v2.1.2, the gem installation was even cleaner:

odin: ~$ gem install iStats

Building native extensions. This could take a while...

Successfully installed iStats-0.0.9

Parsing documentation for iStats-0.0.9

Done installing documentation for iStats after 0 seconds

1 gem installed

Hi kmontgomery,

I had the same issue as you.

The issue was solved by installing xcode tools

$ xcode-select --install

Accepting the xcode licence

$ xcodebuild --license

and running the fix outlined in the readme

sudo ARCHFLAGS=-Wno-error=unused-command-line-argument-hard-error-in-future gem install iStats

The software works brilliantly, thank you developers for doing such a great job! 😀

That's what 'ioreg' is for, io registers like fan control. However, that ability has been removed, suspect. Be discerning when software accesses your hardware. iStats is licensed, closed. smcFanControl uses IOKit which passes memory structures to functions that read/write a bigger memory structure, i.e. 'registry':

http://www.opensource.apple.com/source/IOKitUser/IOKitUser-388.2/iodisplayregist ry.c

https://developer.apple.com/library/mac/Documentation/IOKit/Reference/IOKitLib_h eader_reference/index.html

Very insecure, accesses mach kernel master port, reading all process memory structures, and everything else it can. Accesses system files too. Until ioreg is fixed, we need to find a better way. That's how bad the espionage got, 2014.

Download iStats

https://github.com/Chris911/iStats

Install using instructions on the page, and to view CPU temps + fan rams in terminal type:

istats fan

or

istats cpu

or

istats all

honestly this is the best way to view because it shows a small graph with it too within terminal hope it helped!

brickhead248 wrote:

Hi kmontgomery,

I had the same issue as you.

The issue was solved by installing xcode tools

$ xcode-select --install

Accepting the xcode licence

$ xcodebuild --license

and running the fix outlined in the readme

sudo ARCHFLAGS=-Wno-error=unused-command-line-argument-hard-error-in-future gem install iStats

The software works brilliantly, thank you developers for doing such a great job! 😀

Thanks for that - this helped me... except for one small correction:

sudo xcodebuild -license

Somewhat unconventionally, Xcode's long opts format uses only a single dash. :-)