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RubyのGem::FilePermissionErrorを解決する

Ruby

Posted at 2019-02-25

Macでgemをインストールしようとするとなにやらパーミッションエラー。

$ gem install bundler

ERROR:  While executing gem ... (Gem::FilePermissionError)
    You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory.

sudoでパーミッションを与えてやる。

$ sudo gem install bundler

ERROR:  While executing gem ... (Gem::FilePermissionError)
    You don't have write permissions for the /usr/bin directory.

また別の場所でパーミッションエラーが出たので、次は保存場所もlocalにしてやる。

$ sudo gem install -n /usr/local/bin bundler

Done installing documentation for bundler after 5 seconds
1 gem installed

できた。

$ bundle init

Writing new Gemfile to ~

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