Linux/Ubuntu tree 命令以树形结构显示文件夹目录结构

sudo apt-get -y install tree

$ tree --help
usage: tree [-adfghilnpqrstuvxACDFNS] [-H baseHREF] [-T title ] [-L level [-R]]
[-P pattern] [-I pattern] [-o filename] [--version] [--help] [--inodes]
[--device] [--noreport] [--nolinks] [--dirsfirst] [--charset charset]
[--filelimit #] [<directory list>]
-a            All files are listed.
-d            List directories only.
-l            Follow symbolic links like directories.
-f            Print the full path prefix for each file.
-i            Don't print indentation lines.
-q            Print non-printable characters as '?'.
-N            Print non-printable characters as is.
-p            Print the protections for each file.
-u            Displays file owner or UID number.
-g            Displays file group owner or GID number.
-s            Print the size in bytes of each file.
-h            Print the size in a more human readable way.
-D            Print the date of last modification.
-F            Appends '/', '=', '*', or '|' as per ls -F.
-v            Sort files alphanumerically by version.
-r            Sort files in reverse alphanumeric order.
-t            Sort files by last modification time.
-x            Stay on current filesystem only.
-L level      Descend only level directories deep.

jianbao@jianbao-pc:/www/软件开发$ tree
.
├── PPT
│   └── PHP性能监控与优化.pptx
├── 电子书
│   ├── Linux.环境C程序设计.徐诚.扫描版.pdf
│   └── UNIX环境高级编程（中文第三版）_扫描版.pdf
├── 视频
│   └── PHP_C扩展
│       ├── PHP扩展开发教程.mp4
│       ├── swoole第三节第4部分.mp4
│       ├── swoole视频教程第3节 swoole服务器的进程_线程模型.mp4
│       └── 其他
│           ├── swoole-chat第二节第二部分.mp4
│           ├── swoole-chat第二节第三部分.mp4
└── 手册
└── php_enhanced_zh.chm

$ tree -L 1

$ tree -L 2

$ tree -L N

$ tree -L 2 > /home/php-note.com/tree.txt