--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 /  __/ |  |__   _| |
        |_| |_| |_|_|\__\__,_|\___/|____/  | |  \_/ \___|_|     |_| | |
                                            \_\                    /_/