Comparing Fingerprints

Fingerprint can compare two fingerprints and tell you the difference. Specifically, fingerprint is interested in files that have been tampered with or gone missing:

$ echo "Hello World" > /tmp/foobar
$ fingerprint /tmp/ > /tmp/before.fingerprint

$ echo "Hello World." > /tmp/foobar
$ fingerprint /tmp/ > /tmp/after.fingerprint

-- Compare the two fingerprints
$ fingerprint -c /tmp/before.fingerprint /tmp/after.fingerprint 
W ./foobar
	changes.file.size.new 13
	changes.file.size.old 12
	changes.key.MD5.new 770b95bb61d5b0406c135b6e42260580
	changes.key.MD5.old e59ff97941044f85df5297e1c302d260
	changes.key.SHA2.256.new bf059f3112049d7299f9dc39397fe721c560e790611bfdc163adadbebb4e9ca9
	changes.key.SHA2.256.old d2a84f4b8b650937ec8f73cd8be2c74add5a911ba64df27458ed8229da804a26
	error.code keys_different
	error.message Key SHA2.256 does not match
W ./before.fingerprint
	changes.file.size.new 1049
	changes.file.size.old 0
	changes.key.MD5.new ed5593682c6ac6bb63bee56ceb471fa1
	changes.key.MD5.old d41d8cd98f00b204e9800998ecf8427e
	changes.key.SHA2.256.new 9e0cb06c72f2e1842252c57e2afdf4d7eb2b09d6cf75dcc3892e66b68e2ca91d
	changes.key.SHA2.256.old e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
	error.code keys_different
	error.message Key SHA2.256 does not match
S 
	error.count 2

As before, you can use the --progress option to print progress percentage information to $stderr.