Does this mean that rsync is constantly comparing
checksums on the hypothetical 10,000 files I've
stored in the cloud?  Sounds like a lot of bandwidth.
Or does it list locally the cloud-stored files and
check only when there is a change locally?

tks for your help.  may be more questions soon
jr

--Original Message Text---
From: Alex Austin
Date: Sun, 12 Jun 2011 18:43:26 -0500

rsync sends checksums of files back and forth. When one doesn't match, it uses 
a rolling checksum
algorithm to determine what parts of the file have changed, and send only the 
changes.
- Alex

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