方法一：

命令：

find . -print | sed -e 's;[^/]*/;|____;g;s;____|; |;g'

然后手动alias一下，在你的.bash_profile或者.zshrc中添加:

alias tree="find . -print | sed -e 's;[^/]*/;|____;g;s;____|; |;g'"

 

方法二：

　在终端通过brew安装tree，

命令:　brew install tree 

TingdeMacBook-Pro-2:sdk ting$ tree -helptree: Invalid argument -`e'.usage: tree [-acdfghilnpqrstuvxACDFJQNSUX] [-H baseHREF] [-T title ]    [-L level [-R]] [-P pattern] [-I pattern] [-o filename] [--version]    [--help] [--inodes] [--device] [--noreport] [--nolinks] [--dirsfirst]    [--charset charset] [--filelimit[=]#] [--si] [--timefmt[=]
     
      ]    [--sort[=]
      
       ] [--matchdirs] [--ignore-case] [--] [
       
        ]