watchdog script to reboot my old notebook every time it loses connection with the network router.

watchdog.sh

#!/bin/bash

function flog() {
    DATE=$(date)
    echo "$DATE - $1"
}

function freboot() {
    echo "TIME TO REBOOT"
    /usr/sbin/reboot
}

while [ 1 ]
do
    COUNT=$(ping -c 1 192.168.0.1 > /dev/null && echo 0 || echo `expr $COUNT + 1`)
    flog "$([ $COUNT -ge 5 ] && freboot || echo "COUNT=$COUNT")"

    sleep 1
done