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Sparse files: what are they good for? How to identify sparse files?

April 26, 2017files good identify sparse

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Sparse files: what are they good for? How to identify sparse files?

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Sparse file characteristics are just a [file system] abstraction. Disk blocks are only written (allocated/occupied) if not zero (empty); Unix’ lseek system call allows to skip bytes (that are hence not allocated). Find free sparse conversion code there too.