--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 /  __/ |  |__   _| |
             |_.__/|_|\__|\__|\___/|_| | |  \_/ \___|_|     |_| | |
                                        \_\                    /_/