rsync --link-dest --rsync-path など
覚書
HOST=192.168.1.172 CMD=/usr/local/bin/rsync OLDEST=`date --date '7 days ago' +%Y%m%d` LATEST=`date --date '1 days ago' +%Y%m%d` rm -fr $HOST/$OLDEST mv $HOST/current $HOST/$LATEST $CMD -narzv --delete \ --link-dest="../$LATEST/" \ --rsync-path="sudo $CMD" \ --exclude-from=excludes.txt \ / backup@$HOST:$HOST/current/