Rsync --non-existent-dir-only feature :) ..

[Robert Raszuk]

All,

I can't find a way to achive something probably quite wired :). Let's
say I have two unix folders (on different machines):

/dst-top-1n/
       |
       dir-a
           | files 
       |
       dir-b
           | files 
       |
       dir-c
           | files 

/src-top-2/
       |
       dir-a
           | files 
       |
       dir-b
           | files 
       |
       dir-x
           | files 


Always src is top-2 & dst is top-1. All I need to do is to be able to
send dir-x files to top-1 without even touching dir-a & dir-b simply
because the overall tool does not have permissions to write access them. 

To make it more interesting there are 100s of those top-1 directories
(each on different client machine), the rsync is fully automated, and
the context of each of the top-1 dir differs. Sync is triggered by src.

What I am really looking for is something like in the subject one liner
knob which would compare dir-x directories on src/dst and perform no
action under matching already dirs on both machines.

Huge Thx - Rsync Rocks !!!!
R.