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[ubuntu] rsync

rsync -auhzvHX --compress-level=9 --numeric-ids -e "ssh -T -c aes128-gcm@openssh.com -o Compression=no -x"
-a all
-u if a file is more recent than the source, skip it
-h show human readable file size
-z  compress
-v verbose
-W copy files whole (without delta-xfer algorithm)
-H preserve hard links
-S handle sparse files efficiently
-X preserve extended attributes

e.g. rsync -auhzvHX --compress-level=9 --numeric-ids -e "ssh -T -c aes128-gcm@openssh.com -o Compression=no -x" folder/* remote:/path/to/folder/

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