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Authored by: ctierney on Aug 29, '08 06:59:46AM
That is a lot quicker! You can make it even faster by quitting awk when you find the serial number. On my mac ioreg -c 'IOPlatformExpertDevice' prints 407 lines of text, and the serial number is at the top in line 11 (profiling with time utility):
time ioreg -c 'IOPlatformExpertDevice' | awk -F\" '/IOPlatformSerialNumber/ {print $4; exit}'

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