nixCraft

#!/bin/bash
# add ip / hostname separated by while space 

HOSTS="yourwebsite.com"
# no ping request
COUNT=1

# email report when 
for myHost in $HOSTS
do
  count=$(ping -c $COUNT $myHost | grep 'received' | awk -F',' '{ print $2 }' | awk '{ print $1 }')
  if [ $count -eq 0 ]; then
    # 100% failed 
    # Call script or command below to reconnect 
    # add your command below
  fi
done

#!/bin/bash
#set -x

dnsbroken=`ping -c1nqW5 -s8 www.yahoo.ca 2>&1 | grep -e "unknown" -e "denied" -e "permited"`

if [ -n "$dnsbroken" ]
then

# reconnect the connection
    poff -a
    pon dsl-provider
    sleep 3

fi

# get current ip on ppp0
    x=`/sbin/ifconfig ppp0`
    y=${x#*inet addr:}
    y=${y%% *}

# log current ip
    echo $y > /home/ali/scripts/adsl_ip

exit 0