Can you checksum a directory

It is possible to generate collisions using MD5 but to compare files downloaded MD5 will do the job just fine. Then you use find to produce a lexicographically ordered list -s of files and checksumming each file. I would have thought All of them would give the exact same string as there checksumming the same files. You can see above that the tar output is more than the concatenation of the individual files' contents.

I used md5sum instead of shasum to make the output shorter. On BSD, it looks like the analogous utilities are md5 and sha, as used in your examples.

To continue this discussion, please ask a new question. Get answers from your peers along with millions of IT pros who visit Spiceworks. Asked 10 years, 2 months ago. Active 1 year, 8 months ago. Viewed 44k times. Using Ubuntu Linux. Improve this question. Nicolas Kaiser 1 1 gold badge 4 4 silver badges 16 16 bronze badges. You may also want to look into using diff to compare directories which will actually show you where the directories differ. Kibbee To prevent that, you need to take into account something other than the data content of each file and exactly how you checksum the files.

Given: [checksums] 1. Under your example, A and C would be considered identical because — Jacob Lyles. Add a comment. Active Oldest Votes. Improve this answer. Argyle 43 4 4 bronze badges. Shane Madden Shane Madden k 12 12 gold badges silver badges bronze badges.

Not what I meant, but what I wanted : I did mean recursively, and getting ONE hash at the end, but I think this can be done with md5deep -l and hashing the output itself. The order of the hashing is not consistent, so would have to sort the output before hashing — pufferfish. To get a deterministic order, use -j0 which disables multithreading see the man page. JakePaulus JakePaulus 2, 15 15 silver badges 17 17 bronze badges.

Is there a way to perform a bitwise comparison instead of checksums? It might be faster on local drives. Very nice. Works if source or destination are also remote folder e. Dan D. Hubert Kario Hubert Kario 6, 6 6 gold badges 32 32 silver badges 65 65 bronze badges. Paul Gear 3, 14 14 silver badges 35 35 bronze badges. It creates even SFV compatible files, and checks them too. The output of this entire script can be redirected to a file The output will only tell you which directories where skipped and which have been processed.

After a successful run, you will end up with an md5Sum. Afterwards you can grep the checklog. To regenerate an md5Sum. Python Javascript Linux Cheat sheet Contact.