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macにrailsがインストールできない

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##この記事について
プログラミングの勉強をしています。
勉強の過程で得た知識を、忘れないようまとめておくのと共に、誰かの助けになればと思います。

##「rails -v」が上手くいかない!

(base) hoge@MacBook-Pro ~ % rails -v
Rails is not currently installed on this system. To get the latest version, simply type:

   $ sudo gem install rails

You can then rerun your "rails" command.

調べた通りにrailsをインストールしたのに、rails -vを何度実行してもこのエラーが出てしまいます。

##対処法

rbenv rehash

このコマンドを実行し、再度rails -vを実行すると

(base) hoge@MacBook-Pro ~ % rails -v
Rails 6.0.3.1

上手くいきました!!

##参考
https://qiita.com/amuyikam/items/313bc89c1de320a4257e
https://github.com/railsgirls-jp/coach.info/issues/32

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