DAR is a shell command that backs up directory trees and files. It works under Linux, *BSD, Solaris, MacOS X and MS-Windows. DAR can make selective and differential backups, slices (to split an heavy archive over several media like CD/DVD or Zip floppies), strong or lazy encryption, compression and, obviously, archive testing.
DAR can store the catalog of each backup in a database. So, it can easily find in a set of backups the last version (or another) of a deleted file and restore it.
DAR is a simple but flexible and powerful tool.
There are no reported vulnerabilities