add multiprocessing examples using ping

users/dinkel/multiprocessing/ping_subnet_map.py

+#!/usr/bin/env python
+from multiprocessing.dummy import Pool 
+#from multiprocessing import Pool 
+import socket
+import subprocess
+import random
+from time import sleep
+
+def ping(ip):
+    syscall = subprocess.Popen(["ping", "-c", "1", "-W", "1", ip], shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    syscall.wait()
+#    sleep(random.randint(1,5))
+    print 'Pinging', ip
+    return ip #syscall.returncode
+
+if __name__ == '__main__':
+    subnet = '.'.join(socket.gethostbyname(socket.gethostname()).split('.')[:-1]) + '.'
+
+    MAX_HOSTS = 254
+    pool = Pool(100)
+    net = [subnet + str(i) for i in range(1,MAX_HOSTS)]
+    result = pool.map(ping, net)
+    pool.close()
+    print result

users/dinkel/multiprocessing/ping_subnet_simple.py

+#!/usr/bin/env python
+
+
+import socket
+import subprocess
+
+def ping(ip):
+    print 'Pinging', ip
+    syscall = subprocess.Popen(["ping", "-c", "1", "-W", "1", ip], shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    syscall.wait()
+    return syscall.returncode
+
+if __name__ == '__main__':
+    subnet = '.'.join(socket.gethostbyname(socket.gethostname()).split('.')[:-1]) + '.'
+
+    MAX_HOSTS = 10
+    net = [subnet + str(i) for i in range(1,MAX_HOSTS)]
+    print net
+    for i in net:
+        print ping(i)
+
+