A simple python script that will ping a range of a subnet when you supply the first three octets

Author: geekcomputers

ping_subnet.py

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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