-F    Marks directories with a  trailing  slash  (/),  doors
      with  a  trailing  greater-than  sign  (>), executable
      files with a  trailing  asterisk  (*),  FIFOs  with  a
      trailing  vertical  bar  (|),  symbolic  links  with a
      trailing at-sign (@), and AF_UNIX address family sockets
      with a trailing equals sign (=).