It actually does that by default. Though you might need to add to the list of file types with --skip-compress.

On 6/24/22 19:35, Joseph Garvin via rsync wrote:
I have an rsync cron job to backup folders that contain many different types of files. Most of these are uncompressed files, so the -z option would speed up their transfer. However there are a few files that are already compressed where -z will just needlessly burn CPU and slow down the transfer. Is there any way to express something like, "compress all files except those with extension XXX?" The files are in a proprietary format so it doesn't make sense to add them to a whitelist in rsync itself.

Thanks,

Joe G.



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