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Is there an easy way to make the mapping from kernel extension to the file it came from?

I can get the list of currently loaded kernel extension via kextstat. This gives me the bundle names, like com.AmbrosiaSW.AudioSupport or jp.plentycom.driver.SteerMouse. But how can I then find the actual file locations of these bundles? For example, the Ambrosia bundle is AmbrosiaAudioSupport.kext, and I can only find the bundle name in the Info.plist inside that bundle. I could grep the /System/Library/Extensions/ directory, but this does not necessarily contain extensions loaded after booting, and I assume there is a better way to do it?

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See kextfind

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    kextfind is interesting, but it seems it only searched in the standard /System/Library/Extensions/ folder. Is there a way to find the location of bundles that were not loaded from this folder? Something that remembers the -r parameter of kextutil? – Jan Fabry Jan 11 '11 at 8:20
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You can use kextfind -b <bundlename> to find the file defining a kext you only know the bundle name of.

For example:

kextfind -b com.AmbrosiaSW.AudioSupport

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