Hard link uses different inode and cannot cross devices. Soft link store the file name as its data.
So if you have two files hard linked, even if you delete the origianl file, you can still access it using linked file name.
On the other hand, if you have a soft link to another file. If you deleted the origianl file, you can not access it even if the origianl file has some hard link to other files.
One more thing: If the file is opened by other process and you deleted the file, the file will be still kept in the hard driver until you close it.
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