Ubuntuで日本語のパッケージ入れ忘れた場合

パッケージインストール時に

update-alternatives: using /usr/bin/vim.basic to provide /usr/bin/ex (ex) in auto mode.
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LANG = "ja_JP.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

とか出る場合。　もしかしたら日本語のパッケージが入ってないかも

$ sudo aptitude install language-pack-ja