docs: def get_hostname():
      '''
      Determines the current hostname by probing  ``uname -n``.
      Falls back to ``hostname`` in case of problems.
  
      |appteardown| if both failed (usually they don't but consider
      this if you are debugging weird problems..)
  
      :returns:
          The hostname as string. Domain parts will be split off
      '''
  
      h = shell_run('uname -n', critical=False, verbose=False)
      if not h:
          h = shell_run('hostname', critical=False, verbose=False)
      if not h:
          shell_notify('could not retrieve hostname', state=True)
      return str(h.get('out')).split('.')[0]