code: def get_command_names():
      
      ret = []
      for f in os.listdir(COMMAND_MODULE_PATH):
          if os.path.isfile(os.path.join(COMMAND_MODULE_PATH, f)) and f.endswith(COMMAND_MODULE_SUFFIX):
              ret.append(f[:-len(COMMAND_MODULE_SUFFIX)])
      return ret
docs: Returns a list of command names supported