$ apt install fontforge
$ fontforge -lang=ff -c 'Open($1); Generate($2); Close();' input-font.ttf output-font.otf
$ fontforge -lang=ff -c 'Open($1); Generate($2); Close();' output-font.otf input-font.ttf
update: 2021/11/30 08:58 | path: /pub/software/font