安装homebrew

官网
介绍-macOS 缺失的软件包的管理器
命令行安装

//将以下命令复制到终端
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

测试

brew help
Example usage:
  brew search [TEXT|/REGEX/]
  brew info [FORMULA...]
  brew install FORMULA...
  brew update
  brew upgrade [FORMULA...]
  brew uninstall FORMULA...
  brew list [FORMULA...]

Troubleshooting:
  brew config
  brew doctor
  brew install --verbose --debug FORMULA

Contributing:
  brew create [URL [--no-fetch]]
  brew edit [FORMULA...]

Further help:
  brew commands
  brew help [COMMAND]
  man brew
  https://docs.brew.sh

安装homebrew cask
通过 Homebrew Cask 优雅、简单、快速的安装和管理 OS X 图形界面程序，比如 Google Chrome 和 Dropbox。

$ brew tap caskroom/cask
$ brew cask install google-chrome // 安装 Google 浏览器
$ brew update && brew upgrade brew-cask && brew cleanup // 更新

安装fish

$ brew install fish
$ fish & fish_config
//设置welcome
$ set fish_greeting "我是谢杨学君, talk is cheap. show me the code"