执行brew update报错

(转自:http://c.n-di.com/2017/07/17/1827.html)

更新brew,报错;

Error: Could not link:
/usr/local/etc/bash_completion.d/brew

Please delete these paths and run brew update.
Error: Could not link:
/usr/local/share/zsh/site-functions/_brew

Please delete these paths and run brew update.
Error: Could not link:
/usr/local/share/man/man1/brew.1

Please delete these paths and run brew update.
Error: Could not link:
/usr/local/share/doc/homebrew

Please delete these paths and run brew update.
解决办法

rm -rf /usr/local/etc/bash_completion.d/brew
rm -rf /usr/local/share/zsh/site-functions/_brew
rm -rf /usr/local/share/man/man1/brew.1
rm -rf /usr/local/share/doc/homebrew
brew update

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