OS X上修复The current contents of /usr/local are bin Cellar 

$ sudo rm -rf /usr/local/Cellar /usr/local/.git && brew cleanup

$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"



如果出现error: unable to create file Library/Homebrew/README.md (Permission denied)之类的异常，就使用
$ sudo chown -R $USER /usr/local
$ sudo chown -R $USER /usr/local; brew update
 


OS X 升级Ruby
brew install ruby

ror 使用步骤
http://api.rubyonrails.org/

posted on 2016-09-06 11:15  Questionfeet  阅读(223)  评论(0)  编辑  收藏  举报

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