How can I certify a file is exactly the same?

Question

Is there a package or function that can be applied to a whole and heavy data object to get back a measure of changes in the file? Something based on hash keys would be great, so I can keep track on a shared file.

score 1 · Accepted Answer · edited May 23 '17 at 11:57

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digest package (digest function) lets you create hash functions for R objects (possible ones: "md5", "sha1", "crc32", "sha256", "sha512", "xxhash32", "xxhash64"). You can also run external programs from R (e.g. md5sum on linux) with system commend (see e.g. here).

edited May 23 '17 at 11:57

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answered Dec 10 '14 at 11:59

Tim

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How can I certify a file is exactly the same?

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