$ make install
$ gendiff <filepath1> <filepath2>
$ gendiff <filepath1> <filepath2>
$ gendiff --format plain <filepath1> <filepath2>
$ gendiff -- format json <filepath1> <filepath2>
$ make install
$ gendiff <filepath1> <filepath2>
$ gendiff <filepath1> <filepath2>
$ gendiff --format plain <filepath1> <filepath2>
$ gendiff -- format json <filepath1> <filepath2>