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