./mkspiffs  {-c <pack_dir>|-l|-i} [-b <number>] [-p <number>] [-s
               <number>] [--] [--version] [-h] <image_file>


Where:

   -c <pack_dir>,  --create <pack_dir>
        create spiffs image from a directory
         -- OR --
   -l,  --list
        list files in spiffs image
         -- OR --
   -i,  --visualize
        visualize spiffs image


   -b <number>,  --block <number>
     fs block size, in bytes

   -p <number>,  --page <number>
     fs page size, in bytes

   -s <number>,  --size <number>
     fs image size, in bytes

   --,  --ignore_rest
     Ignores the rest of the labeled arguments following this flag.

   --version
     Displays version information and exits.

   -h,  --help
     Displays usage information and exits.

   <image_file>
     (required)  spiffs image file