--fingerprint
          List all keys (or the specified ones) along with  their  finger‐
          prints.  This  is  the  same  output as --list-keys but with the
          additional output of a line with the fingerprint.  May  also  be
          combined  with  --list-sigs or --check-sigs.  If this command is
          given twice, the fingerprints of all secondary keys  are  listed
          too.