Create NetworkAnalyser

Implemented in Unix.User can input three arguments,first 2 ip addresses and then a hostname.The entire code will perform the "nslookup" on the first ip entered and will parse the output and will pull out the hostname from the result,will show the "ping" status of the 2nd ip as down/up and then it will convert the hostname entered as 3rd parameter to its ip address,perform a "nmap" on it and will return the no of filtered and open ports on the server.