1. ! /bin/sh

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Here's a startup script for /etc/init.d

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2. Copy it to /etc/init.d/watchdog and type
3. > update-rc.d watchdog defaults 99

watchdog=/sbin/watchdog

test -x "$watchdog" || exit 0

case "$1" in

  start)
    echo  "Starting Watchdog"
    $watchdog /dev/watchdog
    ;;
  stop)
    ;;
  reload|force-reload)
    ;;
  restart)
    ;;
  *)
    echo "Usage: /etc/init.d/watchdog {start|stop|reload|restart|force-reload}"
    exit 1

esac l@@

Busybox supports a Watchdog command with the following Syntax. I had to recompile the standard busybox that comes with OpenSlug to add the watchdog command. You can check which commands you busybox supports with busybox --help

You should now have a device /dev/watchdog

Openslug can support a watchdog timer to reboot your slug

Here is what I did to get it working on OpenSlug 3.1

ipkg install kernel-module-ixp4xx-wdt insmod /lib/modules/2.6.16/kernel/drivers/char/watchdog/ixp4xx_wdt.ko echo ixp4xx_wdt >> /etc/modutils/ixp4xx_wdt update-modules

Busybox supports a Watchdog command with the following Syntax. I had to recompile the standard busybox that comes with OpenSlug to add the watchdog command.

watchdog [-t <seconds>] [-F] DEV Periodically write to watchdog device DEV . Options:

-t Timer period in seconds - default is 30 -F Stay in the foreground and don't fork

You can put it in a crontab as follows:

0 0 * * * root /usr/sbin/WatchDog? &>/dev/null