Hashdeep

Create hash file

cd folder1
hashdeep -r -l . > hashdeep_$(date +%y%m%d).txt

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

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

Verify hash on the same or another folder

List new files or changed

cd folder2
hashdeep -r -l -X -v -k hashdeep_$(date +%y%m%d).txt .

• -r Recursive mode
• -l relative file paths
• -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

List how the files have been moved, new files and changed

cd folder2
hashdeep -r -l -avv -k hashdeep_$(date +%y%m%d).txt .

• -a audit mode
• -vv More verbose mode

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