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# Script Name : ping_subnet.py

# Author : Craig Richards

# Created : 12th January 2012

# Last Modified :

# Version : 1.0

# Modifications :

# Description : After supplying the first 3 octets it will scan the final range for available addresses

import os # Load the Library Module

import subprocess # Load the Library Module

import sys # Load the Library Module

filename = sys.argv[0] # Sets a variable for the script name

if '-h' in sys.argv or '--h' in sys.argv or '-help' in sys.argv or '--help' in sys.argv: # Help Menu if called

print '''

You need to supply the first octets of the address Usage : ''' + filename + ''' 111.111.111 '''

sys.exit(0)

else:

if (len(sys.argv) < 2): # If no arguments are passed then display the help and instructions on how to run the script

sys.exit (' You need to supply the first octets of the address Usage : ' + filename + ' 111.111.111')

subnet = sys.argv[1] # Set the variable subnet as the three octets you pass it

if os.name == "posix": # Check the os, if it's linux then

myping = "ping -c 2 " # This is the ping command

elif os.name in ("nt", "dos", "ce"): # Check the os, if it's windows then

myping = "ping -n 2 " # This is the ping command

f = open('ping_' + subnet + '.log', 'w') # Open a logfile

for ip in range(2,255): # Set the ip variable for the range of numbers

ret = subprocess.call(myping + str(subnet) + "." + str(ip) ,

shell=True, stdout=f, stderr=subprocess.STDOUT) # Run the command pinging the servers

if ret == 0: # Depending on the response

f.write (subnet + "." + str(ip) + " is alive" + "\n") # Write out that you can receive a reponse

else:

f.write (subnet + "." + str(ip) + " did not respond" + "\n") # Write out you can't reach the box