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