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