いつも忘れるコマンドシリーズ。
$ sudo update-alternatives --config editor
あとは番号で選ぶ。もちろん入ってないなら先にエディターを入れとく。 sudo apt install vim
$ sudo update-alternatives --config editor There are 4 choices for the alternative editor (providing /usr/bin/editor). Selection Path Priority Status ------------------------------------------------------------ * 0 /bin/nano 40 auto mode 1 /bin/ed -100 manual mode 2 /bin/nano 40 manual mode 3 /usr/bin/vim.basic 30 manual mode 4 /usr/bin/vim.tiny 15 manual mode Press <enter> to keep the current choice[*], or type selection number: 3 update-alternatives: using /usr/bin/vim.basic to provide /usr/bin/editor (editor) in manual mode