$ egak --help
Sample image generator 1.0.0
LeafChage (https://github.com/LeafChage)

USAGE:
    egak [OPTIONS] --height <number> --output <FILE path> --width <number>

FLAGS:
        --help       Prints help information
    -V, --version    Prints version information

OPTIONS:
    -c, --color <#ffffff | black | blue | cyan | gray | green | magenta | red | white | yellow>    default is gray
    -h, --height <number>                                                                          sample image height
    -o, --output <FILE path>                                                                       write image path
    -w, --width <number>                                                                           sample image width