All other hard links to the same file will show a link count that is now reduced by 1.
对同一文件的其它所有硬链接将显示，目前链接数减少1。
If a file has multiple hard links, the file is deleted only when the last link pointing to the inode is deleted and the link count goes to 0.
如果一个文件有多个硬链接，仅在指向inode的最后一个链接被删除且链接数为0时文件才会被删除。
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