offline rsync

tim.conway at tim.conway at
Wed Nov 6 20:28:01 EST 2002

If you can keep two copies of everything, you can use the --write-batch 
and --read-batch (if they work)...
you sync your local mirror, take the batch files to the other system, and 
apply them to both copies there, then work there.  A the end of that run, 
you sync that sessions changes and take those batch files back.  You'll 
have to get them in sync in the first place, and again if you get them out 
of sync.

You mention zip drives...
why not have a drive on each system, and do all your work on one disk?

Also, you mention the cost of modem lines... you can't use a regular voice 

How far apart are these two systems, physically?  Perhaps an 802.11 with 
waveguide antennae solution would give you what you a fast, free, mostly 
secure link.

Tim Conway 
conway.tim at reorder name and reverse domain 
303.682.4917 office, 303.921.0301 cell 
Philips Semiconductor - Longmont TC 
1880 Industrial Circle, Suite D 
Longmont, CO 80501 
Available via SameTime Connect within Philips, caesupport2 on AIM 
"There are some who call me.... Tim?" 

Franco Bagnoli <franco.bagnoli at>
Sent by: rsync-admin at
11/06/02 09:14 AM

        To:     rsync at
        cc:     (bcc: Tim Conway/LMT/SC/PHILIPS)
        Subject:        offline rsync

hello, I'm new to this list. 

here is my question: 

I would like to synchronize two computers (say the home one and the job
one) using zip drives or similar (cdroms, etc), since modem lines are
quite slow and expensive (in Italy). 

I though I could  produce the "signature" of files on home computer, store
it on a zip, go to job, run rsync to copy the missing or
altered files on the disk (possibly in zipped form) and produce the new
signature file, and repeat it once at home. 

I think this could also be seen as a backup system (on cdrom or

Is this feasible with rsync? Is there a better approach? 


Franco Bagnoli (franchino) <bagnoli at>
Dipartimento di Matematica Applicata "G. Sansone" - Universita' di Firenze
Via S. Marta, 3 I-50139 Firenze, Italy. Tel. +39 0554796422, fax: +39 
GPG Key fingerprint = 169D 9EA5 8FD3 7EDA E43A  9830 255F BCEC 0D63 3728

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