#!/bin/sh
# Script "pingg".
#
# Description:
# 1. "ping" 5 times to a given network address;
# 2. If there is no reply from it, will run "/etc/init.d/network restart";
# 3. Sleep 30 seconds;
# 4. Repeat from 1.
#
# Author: 
# ivo at vendomar.ee
#
# Usage: 
# chmod +x ./pingg
#
# Start:
# ./pingg some_network_address log_file &
# or
# ./pingg some_network_address /dev/null &
#
# Stop:
# kill -15 $(ps -C pingg -o pid=)
#


if [ $UID -eq 0 ];
 then
  if [ "$1" != "" ]; 
   then
    if [ "$2" != "" ]; 
     then
      echo 'Script "./pingg" started... '
      System="on"
      trap 'System="off"' SIGTERM
      while [ $System = "on" ]
       do
        PingCount=$(ping $1 -c 3 -w 5 -s 56| grep "64 bytes" | wc -l)
        if [ $PingCount = 0 ];
         then 
	 echo $(date|cat)': Host '$1' is not responding...' >>$2
	 echo '' >>$2
         echo 'Running /etc/init.d/network restart' >>$2
	 /etc/init.d/network restart >>$2 2>&1 
	 echo '' >>$2
        fi
        sleep 30
       done
      echo '...script "./pingg" terminated.'
     else
      echo "Usage: ./pingg address log_file"
    fi
   else
    echo "Usage: ./pingg address log_file"
  fi
 else echo "Only ROOT can run this script!"
fi