HOST1="onet.pl"
HOST2="wp.pl"
LOG="/var/log/neo.log"

X=0

linia=`ping -n -c4 $HOST1 | grep "icmp_seq";
       ping -n -c4 $HOST2 | grep "icmp_seq"`;

for i in `echo $linia`; do
 i=`expr substr $i 1 3 `
 if [ $i = "ttl" ]; then X=$[X+1]; fi;
done

if [ $X = 0 ]; then
 date +%d/%m/%Y"   "%X"   Nie ma polaczenia z internetem. Restartuje poloczenie." >>$LOG
 sleep 1
 /etc/rc.d/internet restart
 /etc/dyndns
else
 date +%d/%m/%Y"   "%X"   OK ($X)" >>$LOG
fi

if [ $X = 0 ]; then
 date +%d/%m/%Y"   "%X"   Nie ma polaczenia z internetem. Restartuje poloczenie." >>$LOG
 sleep 1
 /etc/rc.d/internet restart
else
 date +%d/%m/%Y"   "%X"   OK ($X)" >>$LOG
 /etc/dyndns #MOŻE TO POWINNO BYĆ TU I BY WSZYSTKO GRAŁO?
fi

#!/bin/sh
#
# This script is run by pppd when there's a successful ppp connection.
#
ez-ipupdate --config-file=/etc/ez.conf

#!/usr/bin/ez-ipupdate -c
#
# example config file for ez-ipupdate
#
# this file is actually executable!
#

service-type=dyndns # sa w pakiecie pliki dla innych dynamicznych dns-ow
#service-type=dyndns-static
user=user:haslo
host=adres.symboliczny.ath.cx
interface=interfejs na ktorym ma pilnowac zmiany IP
max-interval=2073600

# please create this file and ensure that the user that ez-ipupdate is running
# as has write permissions to it then uncomment this line, if you don't your
# dyndns account will probably get banned. if you run ez-ipupdate as root (bad
# idea, use "run-as-user") then you can just uncomment this line.
#cache-file=/etc/ez-ipupdate.cache.eth1

# for the mean time we'll just use a cache file in the temp directory
cache-file=/tmp/ez-ipupdate.cache

# uncomment this once you have everything working how you want and you are
# ready to have ez-ipupdate running in the background all the time. to stop it
# you can use "killall -QUIT ez-ipupdate" under linux.
daemon