code: def main():
      
      args = parser.parse_args()
      args_dict = vars(args)
      root_dir = args_dict['root'] if 'root' in args else None
  
      # If a root directory is specified, get the absolute path and
      # check if it exists. Abort if it doesn't exist!
      if root_dir:
          root_dir = os.path.abspath(root_dir)
          if not os.path.exists(root_dir):
              print("The specified directory doesn't exist!")
              sys.exit(1)
      # Default to home directory if no root is specified
      else:
          root_dir = os.path.expanduser('~')
  
      if args.stopdaemon:
          print_command_factory('STOPDAEMON')(vars(args), root_dir)
      elif args.nodaemon:
          daemon_factory(root_dir)()
      elif args.daemon:
          config_dir = os.path.join(root_dir, '.config/pueue')
          os.makedirs(config_dir, exist_ok=True)
          daemon = Daemonize(app='pueue', pid=os.path.join(config_dir, 'pueue.pid'),
                             action=daemon_factory(root_dir), chdir=root_dir)
          daemon.start()
      elif hasattr(args, 'func'):
          try:
              args.func(args_dict, root_dir)
          except EOFError:
              print('Apparently the daemon just died. Sorry for that :/')
      else:
          print('Invalid Command. Please check -h')
docs: Execute entry function.