在学习linux内核代码时，因为它的文件组织庞大，利用此工具可以很方便的查看，文件及目录的组织方式。希望大家有用。里面含安装的源码包和安装方法。-Learning linux kernel code, because it documents a large organization, use this tool can easily view, files and directories are organized. Hope helpful. Inside the source package with installation and installation methods.