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