前言
今天安装zookeeper时使用的是brew方式来安装，才深深的体会到brew的厉害之处，闲话少叙，进入正题。
Homebrew的使用
1. 安装Homebrew
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/mast
在1中指令回车之后，会提示Press RETURN to continue or any other key to abort (回车继续或者按其他键终止)，这是直接回车进入“Downloading and installing Homebrew…”，
如果网络不好的话可能会提示“fatal: unable to access ‘https://github.com/Homebrew/brew/’: SSLRead() return error -9806…等”，没关系重新输入1的指令更新。
用如下命令下载安装msf时，提示curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused
解决办法：
打开 https://www.ipaddress.com/ 输入访问不了的域名，获得对应的IP。
使用vim /etc/hosts命令打开不能访问的机器的hosts文件，添加如下内容：
199.232.68.133 raw.githubusercontent.com 199.232.68.133 user-images.githubusercontent.com 199.232.68.133 avatars2.githubusercontent.com 199.232.68.133 avatars1.githubusercontent.com
注：上面内容中199.232.68.133是raw.githubusercontent.com所在的服务器IP（通过 https://www.ipaddress.com/ 获知）。
保存该文件，再使用即可正常访问。
正常安装完成之后会有如下提示：
HEAD is now at 2b6f47714 Merge pull request #4116 from commitay/zap-force ==> Cleaning up /Library/Caches/Homebrew... ==> Migrating /Library/Caches/Homebrew to /Users/maerfeifei/Library/Caches/Homeb ==> Deleting /Library/Caches/Homebrew... Already up-to-date. ==> Installation successful! ==> Homebrew has enabled anonymous aggregate user behaviour analytics. Read the analytics documentation (and how to opt-out) here: https://docs.brew.sh/Analytics.html ==> Next steps: - Run `brew help` to get started - Further documentation: https://docs.brew.sh
2. brew 常用命令（SoftwareName是你需要处理的软件的软件名）
查看软件最新版本，brew info SoftwareName例如
brew info zookeeper
安装软件，brew install SoftwareName例如
brew install zookeeper
卸载软件：rew remove SoftwareName例如
brew remove zookeeper
查看通过brew安装的所有软件
brew list
查看某个软件的安装路径
brew list 软件名
