can rsync scan files only with mtime since T?

Ming Zhang blackmagic02881 at
Fri Aug 24 17:12:52 GMT 2007

On Fri, 2007-08-24 at 09:47 -0400, Matt McCutchen wrote:
> On 8/23/07, Ming Zhang <blackmagic02881 at> wrote:
> > this one looks interesting! fire a flame here, which one is better,
> > unison or rsync, for daily backup purpose?
> Fundamentally, rsync does stateless one-way copying and Unison does
> stateful two-way synchronization.  Backup is one-way, so rsync is more
> appropriate for almost all backup tasks.  However, in your case where
> there are so many files that you can't afford to send the entire file
> list with every backup, Unison does what you need.

so the stateless is one pros&cons here.

performance wise, does rsync and unison has fundamentally different?
because i saw unison document also mention delta detection algorithm
like rsync.


> Matt
Ming Zhang

@#$%^ purging memory... (*!%

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