--list-secret-keys
-K
    List all keys from the secret keyrings, or just the ones given on the command line. A # after the letters sec means that the secret key is not usable (for example, if it was created via --export-secret-subkeys).

         _           _        ___  _  _      __               _  _ __  
        | |__   __ _(_) __ _ / _ \| || |    / /_   _____ _ __| || |\ \ 
        | '_ \ / _` | |/ _` | | | | || |_  | |\ \ / / _ \ '__| || |_| |
        | |_) | (_| | | (_| | |_| |__   _| | | \ V /  __/ |  |__   _| |
        |_.__/ \__,_|_|\__,_|\___/   |_|   | |  \_/ \___|_|     |_| | |
                                            \_\                    /_/