See also unison, http://www.cis.upenn.edu/~bcpierce/unison/ which does exactly this (and synchronizes using the rsync algorithm).

/Greger

Martin Pool wrote:

On 7 Sep 2003 Marc MERLIN <[EMAIL PROTECTED]> wrote:



I don't know if this has been requested before, but I would really
like for rsync to compute an md5sum for each file at the source and
destination (with a flag turned off by default of course), and it
would realize that I renamed files at the source by noticing a
matching md5sum between different filenames
It would then rename the destination instead of deleting it and
resending the entire source, just because the filename changed.
This would also take care of me moving files between directory trees,
and again do a mv instead of a delete/resend (if I rsync the root of
all that of course)

Or is this possible already?



This is not possible yet. It is on my wishlist for a future program.


Of course remotely detecting files that have moved between directories
might mean having the server hash every file on the filesystem.  So it
might be quite expensive...




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