本文深入探讨了Unix文件系统中的inode概念，解释了文件和目录如何通过inode进行管理和存储信息，同时介绍了硬链接、属性保存、目录与文件名的关系以及Unix目录作为表的特性。
1. files and directories are inode
2. in the inode, the unix stores information about which disk blocks belong to the contents of the directory or file, and information about who owns the directory or file and what access permissions it has
3. the file name and directory name are not stored in inode
4. the name of a directory or file is stored separately (in a different inode) from the inode that actually points to the directory or file contents
5. the name-inode map information is stored in a directory inode; the actual data content of the directory or file is stored in a different inode
6. Unix directories are just tables that map directory and file names to inode numbers
7. Attributes are kept with the data
8. Hard links are new names for the same inode
9. Directories cannot have hard links
10. Directories are simply special kinds of files whose data blocks are tables of name-to-inode mappings
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