#! /bin/sh
#
# exec by root
#
PATH=/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin
export PATH
#
basedir=/provider/catv
#
device=eth0
interval=5m
#
oldip="0.0.0.0"
#
while [ x = x ]
do
    newip=`ifconfig ${device} |\
           grep 'inet addr:' |\
           sed -e 's/^.*inet addr://' -e 's/ .*$//'`
#
    if [ "X${oldip}" != "X${newip}" ]
    then
# myh.no-ip.org
        noip -c ${basedir}/etc/no-ip.conf
        oldip=${newip}
    fi
    sleep ${interval}
done