rdup 0.7.0 has just been released. This is a major bug fix release and until I release 1.0.0 I will only make further bug fixes to rdup (and rdup-tr and rdup-up).

Also the internal filelist has seen some changes, so if you start using this version you will get a (much) larger backup then you might expect.

The changelog reads

-- major bugfixes, internal filelist format change --
- slowly going to a 1.0.0 release -
* version bumped to 0.7.0 as the internal file list format
has changed. Using this new version as a drop-in replacement
for 0.6.6 you will get a larger backup then you expected.
* rdup-backups.7: typo (Johann Klähn)
* rdup-simple.sh: check for a minimum of 2 arguments (Tom Hendrikx)
* rdup-simple.sh: fix -f (full dump)
* rdup-up: add mkpath (works like mkdir -p) function and fix -t option
(reported by Tom Hendrikx)
* rdup-simple.sh/rdup-ln.sh: only report errors on stderr, for the rest 
use stdout (Tom Hendrikx)
* rdup: honor .nobackup files again (Tom Hendrikx)
* rdup: Add filesize and linktype to the internal filelist - this is mostly to
better support hard- and softlinks.
* rdup: allow comments in the internal filelist, this is completely
useless except that rdup now writes a line describing what's in the
filelist using a comment: '# blaa ' etc.
* rdup, rdup-tr, rdup-simple: handle link removals better and add
a test case that will test this specific bug (reported by Tom
Hendrikx)
* small document tweaks and cleanups

See the project page or download the new version directly.