rsync related information
Author: Markus Rathgeb
-z Compress file data during the transfer
-a, --archive archive mode; equals -rlptgoD (no -H,-A,-X)
-H, --hard-links preserve hard links
-A, --acls preserve ACLs (implies -p)
-X, --xattrs preserve extended attributes
-v, --verbose increase verbosity
-i, --itemize-changes output a change-summary for all updates
-P same as --partial --progress
rsync -aHAXviP <src> <dst>