bash script for network

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script

This is a script to avoid disrupting the speed on an open network i am connected. I dont want to slow the net down for the owners.

between basic on line reading, googling and guesing here's what i have any help is much apreciated

#!/bin/bash

  if  [  ping -c 2 192.168.2.101 | grep -o "Destination Host Unreachable"   ]
      then  ifconfig eth0 up
	  sleep 30
	      (path to rerun script)


  elif  [  ping -c 2 192.168.2.106 | grep -o "Destination Host Unreachable"   ]
      then   ifconfig eth0 up
	  sleep 30
	      (path to rerun script)


else ifconfig eth0 down  
sleep 30
 
fi