Running Homebrew as root is extremely dangerous and no longer supported.
As Homebrew does not drop privileges on installation you would be giving all
build scripts full access to your system.
解決思路就是給當(dāng)前用戶添加目錄權(quán)限：
如果用戶名 是 123
sudo chown -R 123 /usr/local
如果用戶名 是 a b c, 有空格
sudo chown -R "a b c" /usr/local
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