Simple network tools

netping.sh

#!/bin/bash
if [ "$1" == "" ]
then
  echo "Usage: ./ping .sh 192.168.1"
else
  for x in `seq 1 254`; do
    ping -c 1 $1.$x | grep "64 bytes" | cut -d " " -f 4 | sed 's/.$//'
done
fi

portscanner.py

#!/usr/bin/env python
"""
Simple port scanner
"""
import socket

IP = raw_input("Enter a host to scan: ")
PORT = input("Enter a port number: ")
# AF_INET = IPv4 ; SOCK_STREAM = TCP
SOCK = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

if SOCK.connect_ex((IP, PORT)):
    print "Port", PORT, "is closed"
else:
    print "Port", PORT, "is open"