[foxboard] start a program at boot time

[archi75012]

hi,
I would like to write a file 'bootOK' in /tmp
as described in http://foxlx.acmesystems.it/?id=57
I stored

#!/bin/sh
echo 'boottime OK' > /tmp/bootOK

in /etc/init.d/boottime but get nothing in /tmp ?
Thanks for your help