You have a bunch of applications designed to show you temperatures and fan speeds in graphical environment. Some are free but most of them are paid.
But what happens if you need something in command line? Well, it is even better because you can find many free powerful tools.
One of them is iStats. Below you will learn how to install and use it.
Install iStats via gem - be careful, it is case sensitive:
mini:~ osx$ [color=green]sudo gem install iStats[/color] Fetching: sparkr-0.4.1.gem (100%) Successfully installed sparkr-0.4.1 Fetching: parseconfig-1.0.6.gem (100%) Successfully installed parseconfig-1.0.6 Fetching: iStats-1.2.0.gem (100%) Building native extensions. This could take a while... Successfully installed iStats-1.2.0 Parsing documentation for sparkr-0.4.1 Installing ri documentation for sparkr-0.4.1 Parsing documentation for parseconfig-1.0.6 Installing ri documentation for parseconfig-1.0.6 Parsing documentation for iStats-1.2.0 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-1.2.0 3 gems installed
Now you have it!
mini:~ osx$ [color=green]istats[/color] --- CPU Stats --- CPU temp: 54.0°C ▁▂▃▅▆▇ --- Fan Stats --- Total fans in system: 1 Fan 0 speed: 1799.0 RPM ▁▂▃▅▆▇ --- Battery Stats --- Battery health: unknown Cycle count: unknown Current charge: mAh 100% Maximum charge: mAh ▁▂▃▅▆▇ NaN% Design capacity: mAh Battery temp: 0.0°C For more stats run `istats extra` and follow the instructions.
If you want to go deeper and have more information displayed, you can do as suggested and type "istats extra", which will tell you to execute "istats scan" in order to have some extra :)
mini:~ osx$ istats extra Looks like you don't have any extra keys enabled. Run `istats scan` for the initial scan or `istats --help` for more info.
mini:~ osx$ istats scan No config file /Users/osx/.iStats/sensors.conf found .. Run scan Scanning keys... Tp0C Unknown 46.390625°C ▁▂▃▅▆▇ Ts0G Unknown 49.0°C ▁▂▃▅▆▇ Ts0S Memory Bank Proximity 35.453125°C ▁▂▃▅▆▇ TA0p Ambient temperature 45.625°C ▁▂▃▅▆▇ TA0P Ambient temperature 45.625°C ▁▂▃▅▆▇ TA1p Ambient temperature 46.125°C ▁▂▃▅▆▇ TA1P Ambient temperature 46.125°C ▁▂▃▅▆▇ TCGc PECI GPU 64.0°C ▁▂▃▅▆▇ TCGC PECI GPU 64.0°C ▁▂▃▅▆▇ TCPG 103.0°C ▁▂▃▅▆▇ TCSc PECI SA 63.0°C ▁▂▃▅▆▇ TCSC PECI SA 63.0°C ▁▂▃▅▆▇ TCTD Unknown 0.109375°C ▁▂▃▅▆▇ TCXc PECI CPU 65.234375°C ▁▂▃▅▆▇ TCXr Unknown -39.765625°C ▁▂▃▅▆▇ TCXC PECI CPU 65.234375°C ▁▂▃▅▆▇ TC0c 64.0°C ▁▂▃▅▆▇ TC0d 62.875°C ▁▂▃▅▆▇ TC0p 56.625°C ▁▂▃▅▆▇ TC0C CPU 0 Core 64.0°C ▁▂▃▅▆▇ TC0D CPU 0 Die 62.875°C ▁▂▃▅▆▇ TC0E CPU 0 ?? 60.953125°C ▁▂▃▅▆▇ TC0F CPU 0 ?? 64.3125°C ▁▂▃▅▆▇ TC0G CPU 0 ?? 99.0°C ▁▂▃▅▆▇ TC0J CPU 0 ?? 2.296875°C ▁▂▃▅▆▇ TC0P CPU 0 Proximity 56.625°C ▁▂▃▅▆▇ TC1c 65.0°C ▁▂▃▅▆▇ TC1C Core 1 65.0°C ▁▂▃▅▆▇ TC2c 64.0°C ▁▂▃▅▆▇ TC2C Core 2 64.0°C ▁▂▃▅▆▇ TC3c 63.0°C ▁▂▃▅▆▇ TC3C Core 3 63.0°C ▁▂▃▅▆▇ TH0a Unknown -127.0°C ▁▂▃▅▆▇ TH0b Unknown -127.0°C ▁▂▃▅▆▇ TH0c Unknown -127.0°C ▁▂▃▅▆▇ TH0A Unknown -127.0°C ▁▂▃▅▆▇ TH0B Unknown -127.0°C ▁▂▃▅▆▇ TH0C Unknown -127.0°C ▁▂▃▅▆▇ TH0O Unknown 9.0°C ▁▂▃▅▆▇ TH0X Unknown -127.0°C ▁▂▃▅▆▇ TH1a Unknown -127.0°C ▁▂▃▅▆▇ TH1b Unknown -127.0°C ▁▂▃▅▆▇ TH1c Unknown -127.0°C ▁▂▃▅▆▇ TH1A Unknown -127.0°C ▁▂▃▅▆▇ TH1B Unknown -127.0°C ▁▂▃▅▆▇ TH1C Unknown -127.0°C ▁▂▃▅▆▇ TH1O Unknown 9.0°C ▁▂▃▅▆▇ TH1X Unknown -127.0°C ▁▂▃▅▆▇ TI0p Unknown 53.0°C ▁▂▃▅▆▇ TI0P Unknown 53.0°C ▁▂▃▅▆▇ TI1p Unknown 48.625°C ▁▂▃▅▆▇ TI1P Unknown 48.625°C ▁▂▃▅▆▇ TMBS Unknown -127.0°C ▁▂▃▅▆▇ TM0p Unknown 48.875°C ▁▂▃▅▆▇ TM0P Memory Slot Proximity 48.875°C ▁▂▃▅▆▇ TM0S Memory Slot 1 50.75°C ▁▂▃▅▆▇ TPCD Platform Controller Hub Die 55.0°C ▁▂▃▅▆▇ TP0p Unknown 55.375°C ▁▂▃▅▆▇ TP0P Unknown 55.375°C ▁▂▃▅▆▇ TW0p Unknown 43.375°C ▁▂▃▅▆▇ TW0P AirPort Proximity 43.375°C ▁▂▃▅▆▇ Done scanning keys. All keys are disabled by default. Use `istats enable [key]` to enable specific keys or `istats enable all`. The enabled sensors will show up when running `istats` or `istats extra`.
You will have in front of you a lot of sensors, some of them useless (do not know why they were detected but skipping on that). So, all you have to do now is to select whatever is relevant for you from the list and enable them.
I enabled the following - you may have them different, do not enable exactly what is below. It is only as example:
istats enable Ts0S istats enable TA0p istats enable TA0P istats enable TA1p istats enable TA1P istats enable TCGc istats enable TCGC istats enable TC0C istats enable TC0D istats enable TC0P istats enable TC1C istats enable TC2C istats enable TC3C istats enable TM0P istats enable TM0S istats enable TPCD istats enable TW0P
And now you will have more information:
mini:~ osx$ istats --- CPU Stats --- CPU temp: 54.0°C ▁▂▃▅▆▇ --- Fan Stats --- Total fans in system: 1 Fan 0 speed: 1798.0 RPM ▁▂▃▅▆▇ --- Battery Stats --- Battery health: unknown Cycle count: unknown Current charge: mAh 100% Maximum charge: mAh ▁▂▃▅▆▇ NaN% Design capacity: mAh Battery temp: 0.0°C --- Extra Stats --- Ts0S Memory Bank Proximity temp: 35.3°C ▁▂▃▅▆▇ TA0p Ambient temperature temp: 44.5°C ▁▂▃▅▆▇ TA0P Ambient temperature temp: 44.5°C ▁▂▃▅▆▇ TA1p Ambient temperature temp: 44.88°C ▁▂▃▅▆▇ TA1P Ambient temperature temp: 44.88°C ▁▂▃▅▆▇ TCGc PECI GPU temp: 59.0°C ▁▂▃▅▆▇ TCGC PECI GPU temp: 59.0°C ▁▂▃▅▆▇ TC0C CPU 0 Core temp: 59.0°C ▁▂▃▅▆▇ TC0D CPU 0 Die temp: 57.88°C ▁▂▃▅▆▇ TC0P CPU 0 Proximity temp: 54.0°C ▁▂▃▅▆▇ TC1C Core 1 temp: 60.0°C ▁▂▃▅▆▇ TC2C Core 2 temp: 56.0°C ▁▂▃▅▆▇ TC3C Core 3 temp: 58.0°C ▁▂▃▅▆▇ TM0P Memory Slot Proximity temp: 48.63°C ▁▂▃▅▆▇ TM0S Memory Slot 1 temp: 50.61°C ▁▂▃▅▆▇ TPCD Platform Controller Hub Die temp: 51.0°C ▁▂▃▅▆▇ TW0P AirPort Proximity temp: 41.63°C ▁▂▃▅▆▇
Developer page of iStats: https://github.com/Chris911/iStats
