MacOS install Homebrew

Homebrew 主页：https://brew.sh/index_zh-cn.html

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说明：

安装homebrew是会同时安装command line tools的，是xcode的一个命令行工具

会添加脚本路径：

/usr/local/bin/brew
/usr/local/share/doc/homebrew
/usr/local/share/man/man1/brew.1
/usr/local/share/zsh/site-functions/_brew
/usr/local/etc/bash_completion.d/brew
/usr/local/Homebrew

会新增文件路径：

/usr/local/Cellar
/usr/local/Homebrew
/usr/local/Frameworks
/usr/local/bin
/usr/local/etc
/usr/local/include
/usr/local/lib
/usr/local/opt
/usr/local/sbin
/usr/local/share
/usr/local/share/zsh
/usr/local/share/site-functions
/usr/local/var

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安装命令：

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

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测试：

brew -v
#查看版本
brew doctor
#查看brew的安装情况