NUT on OSX 10.6 [Sharing a UPS with ReadyNAS and Computers]

And (perhaps slightly more usefully!) here is my UPS:

#!/bin/sh


##
# UPS Monitor script
# Using Network UPS Tools executables
##

. /etc/rc.common

FINK_BIN="/sw/sbin"

StartService ()
{
ConsoleMessage "Starting NUT (UPS Service)"
if [ -n "`ps acxw | grep -i "upsmon" | awk {'print $1'}`" ]; then
ConsoleMessage -f "NUT (UPS Service)"
echo "Failed to start NUT (UPS Service): It is already running."
exit 0
fi
${FINK_BIN}/upsmon &
if [ -n "`ps acxw | grep -i "upsmon" | awk {'print $1'}`" ]; then
ConsoleMessage -s "NUT (UPS Service)"
echo "NUT (UPS Service) successfully started."
exit 0
else
ConsoleMessage -f "NUT (UPS Service)"
echo "Failed to start NUT (UPS Service): Either the application has been deleted or it has no execution right."
exit 0
fi
}

StopService ()
{
ConsoleMessage "Stopping NUT (UPS Service)"
if [ -z "`ps acxw | grep -i "upsmon" | awk {'print $1'}`" ]; then
ConsoleMessage -s "NUT (UPS Service)"
echo "Failed to stop NUT (UPS Service): It is not running."
exit 0
fi
${FINK_BIN}/upsmon -c stop
if [ -n "`ps acxw | grep -i "upsmon" | awk {'print $1'}`" ]; then
ConsoleMessage -s "NUT (UPS Service)"
echo "Failed to stop NUT (UPS Service) out of unknown reason."
exit 0
else
ConsoleMessage -s "NUT (UPS Service)"
echo "NUT (UPS Service) successfully stopped."
exit 0
fi
}

StopServiceForcefully()
{
ConsoleMessage "Stopping NUT (UPS Service)"
if [ -z "`ps acx | grep -i "upsmon" | awk {'print $1'}`" ]; then
echo "Failed to stop NUT (UPS Service): It is not running."
else
kill -kill `ps acxw | grep -i "upsmon" | awk {'print $1'}`
if [ -n "`ps acxw | grep -i "upsmon" | awk {'print $1'}`" ]; then
echo "Failed to stop NUT (UPS Service) out of unknown reason."
else
echo "NUT (UPS Service) successfully stopped."
fi
fi
}

RestartService()
{
ConsoleMessage "Trying to restart NUT (UPS Service)."
StopService
StartService
exit 0
}

RunService "$1"