old_contents: import os
  import sys
  
  from dvc.config import Config, ConfigI
  from dvc.exceptions import DvcException
  from dvc.git_wrapper import GitWrapper
  from dvc.logger import Logger
  from dvc.settings import Settings
  from dvc.system import System
  
  
  class Runtime(object):
      CONFIG = 'dvc.conf'
  
      @staticmethod
      def conf_file_path(git_dir):
          return System.realpath(os.path.join(git_dir, Runtime.CONFIG))
  
      @staticmethod
      def run(cmd_class, parse_config=True, args_start_loc=2):
          """
  
          Arguments:
              args_start_loc (int): where the arguments this command should use start
          """
  
          try:
              runtime_git = GitWrapper()
  
              if parse_config:
                  runtime_config = Config(Runtime.conf_file_path(runtime_git.git_dir))
              else:
                  runtime_config = ConfigI()
  
              args = sys.argv[args_start_loc:]
  
              instance = cmd_class(Settings(args, runtime_git, runtime_config))
              sys.exit(instance.run())
          except DvcException as e:
              Logger.error(e)
              sys.exit(1)
  
new_contents: import os
  import sys
  
  from dvc.config import Config, ConfigI
  from dvc.exceptions import DvcException
  from dvc.git_wrapper import GitWrapper
  from dvc.logger import Logger
  from dvc.settings import Settings
  from dvc.system import System
  
  
  class Runtime(object):
      CONFIG = 'dvc.conf'
  
      @staticmethod
      def conf_file_path(git_dir):
          return System.realpath(os.path.join(git_dir, Runtime.CONFIG))
  
      @staticmethod
      def run(cmd_class, parse_config=True, args_start_loc=2):
          """
  
          Arguments:
              args_start_loc (int): where the arguments this command should use start
          """
  
          try:
              runtime_git = GitWrapper()
  
              if parse_config:
                  runtime_config = Config(Runtime.conf_file_path(runtime_git.git_dir))
              else:
                  runtime_config = ConfigI()
  
              args = sys.argv[args_start_loc:]
  
              # To make argparse print "usage: dvc cmd" instead of "usage: dvc"
              sys.argv[0] = sys.argv[0] + " " + sys.argv[1]
  
              instance = cmd_class(Settings(args, runtime_git, runtime_config))
              sys.exit(instance.run())
          except DvcException as e:
              Logger.error(e)
              sys.exit(1)
  
subject: fix usage msg