mac下brew install 报错
Password:
Error: Cowardly refusing to `sudo brew install'
You can use brew with sudo, but only if the brew executable is owned by root.
However, this is both not recommended and completely unsupported so do so at
your own risk.
原因是这个brew的权限不正确
修改一下这个brew的权限chown root:wheel /usr/local/bin/brew
同时：上面的命令要在root用户下执行
切换到root用户的命令： sudo -i
