Hashdeep

Create hash file

cd folder1
hashdeep -e -l -r . > hashdeep.txt

• -r Recursive mode
• -e Estimate time (opcional)
• -l relative file paths

To get a deterministic order, use -j0 which disables multithreading (see the man page)

Verify hash on the same or another folder

cd folder2
hashdeep -r -X -v -k hashdeep.txt .

• -r Recursive mode
• -X Display each failed hash that does not match the list of known hashes
• -v Verbose mode
• -k Load list of known hashes
• hashdeep.txt File containing hashes
• dir Name of the directory in question

MAN: http://md5deep.sourceforge.net/hashdeep.html More info: https://linhost.info/2010/05/using-hashdeep-to-ensure-data-integrity/