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checksum a directory / files

Terminal - checksum a directory / files
tar -cf - file1 dir1/ dir2/ | md5sum
2014-04-17 14:33:44
User: snipertyler
Functions: tar
checksum a directory / files

Doesn't create a file

Make sure to list the files / directories in the same order every time.


There are 5 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

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What others think

Unfortunately, the example you give won't work reliably.

tar will add files in the order they're stored on disk, which is fs-specific and not guaranteed to be consistent -- sort is needed

Secondly, because tar stores timestamps, etc, even two identical directories give different md5sums:

mkdir p; touch p/{a..z}; cp -a p q tar cf - p | md5sum

60ee120aabc469256b32a3734d949cf8 -

tar cf - q | md5sum

dee4efea5367daf7e993f1ee8c46c1bc -

Comment by flatcap 84 weeks and 4 days ago

Your point of view

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