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