old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  import os
  
  os.system('python nettacker.py --help')
  os.system("python nettacker.py -i 127.0.0.1 -u user1,user2 -p pass1,pass2 -m all -g 21,25,80,443 -t 2 -T 0.1")
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  import os
  
  # Test help menu command
  os.system('time python nettacker.py --help')
  # Test show version command
  os.system('time python nettacker.py --version')
  # Test all modules command
  os.system("time python nettacker.py -i 127.0.0.1 -u user1,user2 -p pass1,pass2 -m all -g 21,25,80,443 -t 2 -T 0.1")
  # Test all modules for second time (testing cache) command
  os.system("time python nettacker.py -i 127.0.0.1 -u user1,user2 -p pass1,pass2 -m all -g 21,25,80,443 -t 2 -T 0.1")
  
subject: add time command, run twice for testing cache speed