1. # 安装Nerd Font
    2. $ git clone https://github.com/ryanoasis/nerd-fonts.git
    3. $ cd nerd-fonts
    4. $ ./install.sh
    6. # 安装Colorls
    7. $ git clone https://github.com/athityakumar/colorls.git
    8. $ cd colorls
    9. $ gem install colorls  # root执行
    11. $ alias lc='colorls -lA --sd'