#!/usr/bin/env python

import sys
from iscowalive import check


def usage(name):
    msg = """
    Usage:

    To check an url availability: %(name)s http://url
    """ % {'name': name}
    print(msg)


if __name__ == '__main__':

    if len(sys.argv) == 1:
        usage(sys.argv[0])
        sys.exit(1)
    else:
        if check(sys.argv[1]):
            print "OK"
        else:
            print "KO"
