Verify that a burned disk is identical to your source

Disk Utility will check directories but unfortunately not data

The below Terminal command will compare two sets of data for an exact data structure. Use it to compare a backup to an original.
(note: don’t use apostrophe/foot mark in file names. Terminal omits them)

In Terminal, example:
diff -r /Volumes/MacPro500/2009.03.12AppBackup  /Volumes/MacPro500/testBackup/2009.03.12AppBackup

(copied off the web)