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fwkpfv(1)                 BSD General Commands Manual                fwkpfv(1)

NAME
     fwkpfv -- FireWire kprintf viewer

SYNOPSIS
     fwkpfv [-o] [-c] [-n] [-i]

DESCRIPTION
     Use fwkpfv to receive FireWire kprintf logging. FireWireKPrintf redirects "kprintf()" logging to
     FireWire. Kernel printfs or "kprintfs" are used by many kernel services as a low level logging mecha-nism. mechanism.
     nism. They can also be used in third party kernel extensions. FireWire kprintfs are available very
     early in the kernel's startup and right until the cpu is powered down at sleep, restarted, or shutdown.
     Similarly, they are available almost as soon as the cpu is powered when waking. They can be useful for
     debugging kernel code (including KEXTs), particularly sleep/wake issues where the display and/or ether-net ethernet
     net is unavailable.

OPTIONS
     The available options are as follows:

     -o     Append output logging to /Library/Logs/FireWireKPrintf.log.

     -c     Open log file with Console.app. Only valid with "-o".

     -n     Create a new log file, rather than append. Only valid with "-o".

     -i     Prefix target machine's ID to each log.

FILES
     /usr/bin/fwkpfv
             is installed as part of the Mac OS X Developer Tools.

AUTHORS
     This utility was written by Carlos Calderon

Mac OS X                         July 8, 2007                         Mac OS X