参考：https://jingyan.baidu.com/article/8065f87fae247e2330249876.html
1.打开 iTerm21. 2.下载 ： git clone git://github.com/robbyrussell/oh-my-zsh.git ~/.oh-my-zsh 2.替换zshrc ： cp ~/.oh-my-zsh/templates/zshrc.zsh-template ~/.zshrc 3.bash 切换成zsh：chsh -s /bin/zsh
//zsh 切换成bash：chsh -s /bin/bash
原文：https://www.cnblogs.com/hhls/p/8998925.html