Is it possible to do a sync that only performs the deletes? (No copying.)
My use case is syncing a very large folder to a cloud service over a very slow connection. I have access to a faster connection but not with the machine housing the large folder. As a result I would like to split the sync into two parts.
Part 1 (Need help) - Sync all deletes from the large folder to the cloud service. Even with the backup feature enabled this is a relatively low bandwidth operation so it can be performed over the slow connection.
Part 2 (Partially Solved) - Sync the new and changed files over the faster connection. I have been able to mostly accomplish this via a union file system on the slow internet machine with a portable device. Then I can transport the portable device to the faster internet location and actually perform the upload of the new and changed files. The current problem is that if backup is turned off deletes are ignored, if backup is turned on all deletes and edits result in a download of the cloud version over the slow internet connection.
For further background the folder in it's entirety is far larger than the portable device can handle. However, the changes can easily be handled by the portable device.
Ideal would be a single command to accomplish this. However, I'd be happy with even the ability to run this as two separate commands. Deletes first then new and edit. (Oh, and if backup folder is turned on I would expect deletes to include the remote portion of the edit.)