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Is there an API or software to get accurate Wi-Fi signal strength on a Mac?

Is there an API, shell command, or AppleScript to get an accurate reading of the current Wi-Fi power in Mac OSX?

FYI I can also open a browser and use JavaScript if it has this value.

What I'm trying to do is test the power of Wi-Fi for different places in my kitchen or living room. I need to check the power of WiFi for every place. If it is low, I’m moving to a new place. The WiFi bars displayed by OSX don't have enough data for me.

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There is a built-in airport team that will do this. This location:

/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport

, .

 sudo ln -s /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport /usr/sbin/airport


airport -I

http://osxdaily.com/2007/01/18/airport-the-little-known-command-line-wireless-utility/

, , AppleScript, :

set wirelessRSSI to do shell script "airport -I | grep CtlRSSI | sed -e 's/^.*: //g'"
set wirelessStrength to (wirelessRSSI + 100) * 2
display notification "Wireless sigal quality: " & wirelessStrength & "%"
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Python script, CoreWLAN framework:

#!/usr/bin/python

from AppKit import CWInterface

IFACE = 'en0'
NAME  = 'MyWifiNetwork'

interface      = CWInterface.interfaceWithName_(IFACE)
results, error = interface.scanForNetworksWithName_error_(NAME, None)

for result in results:
    print 'SSID:', result.ssid()
    print 'RSSI:', result.rssiValue()
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. Finder

/System/Library/CoreServices/Applications


Wireless Diagnostics.app

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Warning users about data collection is good. Thank you for your explicit warning.

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