初 Ubuntu、sudores がどうなっているか確認のため、 visudo を叩いて、
画面が jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj となったのち、
Ubuntuではまず最初に

apt-get remove nano

```すべしと学んだ。