There is no BridgeSupport for IOkit... so ruby is out for now. like Henry said you can escape to a shell.. or wrap this snippet in an objc class... #include <CoreFoundation/CoreFoundation.h> #include <IOKit/IOKitLib.h> // Returns the serial number as a CFString. // It is the caller's responsibility to release the returned CFString when done with it. void CopySerialNumber(CFStringRef *serialNumber) { if (serialNumber != NULL) { *serialNumber = NULL; io_service_t platformExpert = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching("IOPlatformExpertDevice")); if (platformExpert) { CFTypeRef serialNumberAsCFString = IORegistryEntryCreateCFProperty(platformExpert, CFSTR(kIOPlatformSerialNumberKey), kCFAllocatorDefault, 0); if (serialNumberAsCFString) { *serialNumber = serialNumberAsCFString; } IOObjectRelease(platformExpert); } } } Quote form MacRuby Dev 17/1/2011 "Looks like I talked too fast, there isn't any BridgeSupport file for IOKit, even in Preview 2. I will look into it, as I'm planning to roll out a new version soon. Laurent " On 6/04/2011, at 9:26 AM, Henry Maddocks wrote:

On 6/04/2011, at 9:10 AM, Robert Rice wrote:

...

Hi Gang:

Could anyone help me to read the computer's serial number from a MacRuby program. Since I don't know Objective C, I haven't been able to figure out how to access it.

system_profile = `system_profiler SPHardwareDataType` serial_number = system_profile.match(/Serial Number.*: (.*)/)[1]

Henry

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