切换到非root下$操作符，打开命令行：
输入
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
然后完成之后输入密码。
image.png
image.png
Done with Command Line Tools (macOS Sierra version 10.12) for Xcode
Done.
==> /usr/bin/sudo /bin/rm -f /tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress
==> /usr/bin/sudo /usr/bin/xcode-select --switch /Library/Developer/CommandLineTools
==> Downloading and installing Homebrew...
remote: Counting objects: 98632, done.
Receiving objects: 15% (15678/98632), 3.78 MiB | 22.00 KiB/s
安装速度如此慢，有点绝望的，lattern?
另外通过window 电脑登录另外一个qq把网盘的东西发过来，由于是局域网，所以妙传，为毛用window下载，你懂的，
速度快
image.png
