two way mirroring or syncing?

Ah grasshopper, read the man page, the rsync man page. Look at the -u or
-update option. Simply run rsync from each side and use the -u flag.


On Tue, 2002-12-17 at 22:22, Eric Andresen wrote:
> True, but the problem is you have to remember which folder was last
> used.. I currently use a similar setup to sync my home directory on my
> laptop and desktop, but I can modify one of the two at a time, and keep
> any of a changes, as the next rsync makes sure that /A matches what /B
> has, without checking which is newer.
>
> Thus the question is, can rsync, or something else, check which is newer, and use that file, rather than just saying /A is the source, and /B is the destination? I'd love to know a better solution!
>
> On Tue, 2002-12-17 at 20:58, Matt Alexander wrote:
> > On Tue, 17 Dec 2002, Kurt Granroth wrote:
> >
> > > Does anybody know of a tool that will keep two directories totally in sync
> > > but not in real-time? Basically, I want to have two directories /A and /B
> > > that every time they are synced (maybe once an hour), they will be
> > > identical. Changes can happen on either /A or /B.
> >
> > Hmm... so if /A/myfile is modified and then 5 minutes later, /B/myfile is
> > modified, which myfile would you choose to keep? I think the only way to
> > go both ways is if you don't modify the same files in each directory. In
> > which case, you could use rsync.
> >
> > > Now rsync is great for one-way updates. If, say, all changes are only done
> > > to /A than rsync is perfect for keeping /B in sync. However, if you start
> > > deleting files, then rsync doesn't know what to keep and what to delete.
> >
> > rsync can handle deleted files with the --delete option. If /A/myfile was
> > deleted, then when you ran rsync going from /A to /B, then /B/myfile would
> > be removed. Likewise for any files deleted from /B when going from /B to
> > /A.
> > ~M
> >
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