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[20100202] Turn your ALIX into KITT (Updated)
Drop the following script into /etc/rc.d/alixkitt, put "alixkitt=yes" into /etc/rc.conf and enjoy:
#!/bin/sh
# Turn ALIX2c front LEDs into running LED
# http://www.gifninja.com/Workspace/59f3f22e-5f40-4937-936c-1dc0d6fbe690/output.gif
#
# Copyright (c) 2010 Hubert Feyrer <hubertf@NetBSD.org>

# PROVIDE: alixkitt

$_rc_subr_loaded . /etc/rc.subr

name="alixkitt"
start_cmd="alixkitt_start"
stop_cmd="alixkitt_stop"
pidfile="/var/run/${name}.pid"

alixkitt_sleeptime=1.0          # 0.5

alixkitt_setled()
{
        gpioctl -q -d /dev/gpio 6 $1
        gpioctl -q -d /dev/gpio 25 $2
        gpioctl -q -d /dev/gpio 27 $3

        sleep $alixkitt_sleeptime
}

alixkitt_start()
{
	touch $pidfile
        (
                alixkitt_setled 0 0 0

                while [ -f $pidfile ] ; do
                        alixkitt_setled 0 1 1
                        alixkitt_setled 1 0 1
                        alixkitt_setled 1 1 0
                        alixkitt_setled 1 0 1
                done
        ) &;
        echo $! >$pidfile
        echo Started pid $!
}

alixkitt_stop()
{
        if [ -f /var/run/alixkitt.pid ]; then
                read pid <$pidfile
                echo Stopped pid $pid
                kill $pid
                rm $pidfile
                alixkitt_setled 1 1 1
        fi
        exit 0
}

load_rc_config $name
run_rc_command "$1"
P.S.: There's still a bug left in that stopping immediately re-starts the process. Got a patch? Update: Axel Scheepers suggested doing the while-loop only as long as the PID-file exists. Changed above.

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