ping_list.py

#!/usr/bin/python

import sys, os
import urllib2

def get_domains(fname):
    domains = []
    with open(fname, 'r') as f:
        for line in f.readlines():
            line = line.strip()
            domains.append(line)
    return domains

def main():
    argc = sys.argv.__len__()
    argv = sys.argv
    if argc < 2:
        print "Supply the filename (domains list)"
        return
    domains = get_domains(argv[1])
    up_num = 0
    for hostname in domains:
        response = os.system("ping -c 1 " + hostname)
        if response == 0:
            up_num =+ 1
    print "number of active hosts : " + str(up_num)

if __name__ == "__main__":
    sys.exit(main())