Files in most file systems are uniquely identified by inode and can be referenced by multiple files. Why does everyone forget links?
Files in most file systems are uniquely identified by inode and can be referenced by multiple files. Why does everyone forget links?
A dataset can persist across multiple file systems. A UUID is a way to know that one dataset is equivalent (identical) to another. Now you can cache, store-and-forward, archive and retrieve and know what you have.
UUIDs aren't very good for this use case, a sufficiently large CRC or cryptographic hash is better because it's intrinsically tied to the data's value while UUIDs are not