技能扩展（6）
1. brew参考：https://www.cnblogs.com/zoulifeng2017/p/7514139.htmlHomebrew官网 运行命令：/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" brew用法简要说明：brew update
更新brew；brew install {应用名，如git} 安装软件brew cask install {应用名，如git} 也是下载安装，与上面的区别，请查看https://www.zhihu.com/question/更多用法请 brew help但是在安装brew是出现错误：remote: Counting objects: 97646, done.remote: Compressing objects: 100% (57/57), done.error: RPC curl 56 SSLRead() return error -9806iB/s
fatal: The remote end hung up unexpectedlyfatal: early EOFfatal: index-pack failedFailed during: git fetch origin master:refs/remotes/origin/master --tags --force运行命令：ruby -e "$(curl --insecure -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"正常下载中。应该是和网络协议有关，需要添加一个insecure选项。对应卸载命令：ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"查看版本：PeterdeMBP:test_m peteryoung$ brew -vHomebrew 1.5.4Homebrew/homebrew-core (git revision f51b; last commit )2.安装selenium运行命令：brew install selenium报错提示selenium no available运行命令：brew install selenium-server-standalone提示需要翻墙。}