code: def _get_rcvar(name, jail=None):
      '''
      Return rcvar
  
      .. versionchanged:: 2016.3.4
  
      Support for jail (representing jid or jail name) keyword argument in kwargs
      '''
      if not available(name, jail):
          log.error('Service %s not found', name)
          return False
  
      cmd = '{0} {1} rcvar'.format(_cmd(jail), name)
  
      for line in __salt__['cmd.run_stdout'](cmd, python_shell=False).splitlines():
          if '_enable="' not in line:
              continue
          rcvar, _ = line.split('=', 1)
          return rcvar
  
      return Nonf _get_rcvar(name, jail=None):
      '''
      Return rcvar
  
      .. versionchanged:: 2016.3.4
  
      Support for jail (representing jid or jail name) keyword argument in kwargs
      '''
      if not available(name, jail):
          log.error('Service %s not found', name)
          return False
  
      cmd = '{0} {1} rcvar'.format(_cmd(jail), name)
  
      for line in __salt__['cmd.run_stdout'](cmd, python_shell=False).splitlines():
          if '_enable="' not in line:
              continue
          rcvar, _ = line.split('=', 1)
          return rcvar
  
      return None
docs: Return rcvar
  
      .. versionchanged:: 2016.3.4
  
      Support for jail (representing jid or jail name) keyword argument in kwargs