1：按照官网/usr/bin/ruby -e "$(curl -fsSL
https://raw.githubusercontent.com/Homebrew/install/master/install)"
这种方式安装由于我大天朝的原因，放弃了
2：执行以下命令
(1) cd ~
(2) curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install >> brew_install
(3)vim brew_install
修改这个文件中资源链接
就是把这两句
BREW_REPO = “https://github.com/Homebrew/brew“.freeze
CORE_TAP_REPO = “https://github.com/Homebrew/homebrew-core“.freeze
更改为这两句
BREW_REPO = “https://mirrors.ustc.edu.cn/brew.git “.freeze
CORE_TAP_REPO = “https://mirrors.ustc.edu.cn/homebrew-core.git“.freeze
（4）/usr/bin/ruby brew_install
之后如果提示下载失败，继续第5步
（5）git clone git://mirrors.ustc.edu.cn/homebrew-core.git/ /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core --depth=1
这时候就下载成功了
然后把homebrew-core的镜像地址也设为中科院的国内镜像
cd "$(brew --repo)"
git remote set-url origin https://mirrors.ustc.edu.cn/brew.git
cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core"
git remote set-url origin https://mirrors.ustc.edu.cn/homebrew-core.git
执行更新，成功：
brew update
最后用这个命令检查无错误：
brew doctor
