1.安装
sudo apt install tree
2. 语法
‘
tree [-adfgilnopqrstuxACDFNS] [-L level [-R]] [-H baseHREF] [-T title]
[-o file name] [--nolinks] [-P pattern] [-I pattern] [--inodes]
[--device] [--noreport] [--dirsfirst] [--version] [--help]
[--filelimit #] [--si] [--prune] [--du] [--timefmt format]
[directory ...]’
选项
