1:安装oh-my-zsh
sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"
2、安装好后，重新打开命令行，输入
git clone git://github.com/zsh-users/zsh-autosuggestions ~/.zsh/zsh-autosuggestions
source ~/.zsh/zsh-autosuggestions/zsh-autosuggestions.zsh
macos下安装oh-my-zsh和zsh-autosuggestion
原文：http://www.cnblogs.com/zhangwei595806165/p/5721178.html