----------------------------------------- backup with rsync
#!/bin/sh

LIST="rootfs usr data data2"

for d in $LIST; do
mount /backup/$d
rsync -ax --exclude fstab --delete /$d/ /backup/$d/
umount /backup/$d
done

DAY=`date "+%A"`

rsync -a --delete /usr/local/apache /data2/backups/$DAY
rsync -a --delete /data/solid /data2/backups/$DAY
----------------------------------------- rsync
#!/bin/sh
rsync -avz www:/home/raffi/xfer/* /home/raffi/xfer
rsync -avz www:/home/httpd/cgi-bin/* home/httpd/html/cgi-bin
rsync -e ssh -av rafael@www:/home/rafael/xfer/* xfer
rsync -e ssh -av raffi@www:/home/raffi/xfer/* xfer
----------------------------------------- mirror server
rsync -avz -e ssh someuser@server1.example.com:/var/www/ /var/www/
mkdir /root/rsync
ssh-keygen -t dsa -b 2048 -f /root/rsync/mirror-rsync-key
Now we want to allow connections only from mirror.example.com, and the
connecting user should be allowed to use only rsync, so we add

command="/home/someuser/rsync/checkrsync",from="mirror.example.com",no-port-forwarding,no-X11-forwarding,no-pty
right at the beginning of /home/someuser/.ssh/authorized_keys

----------------------------------------- check script
/home/someuser/rsync/checkrsync
#!/bin/sh

case "$SSH_ORIGINAL_COMMAND" in
        *\&*)
                echo "Rejected"
                ;;
        *\(*)
                echo "Rejected"
                ;;
        *\{*)
                echo "Rejected"
                ;;
        *\;*)
                echo "Rejected"
                ;;
        *\<*)
                echo "Rejected"
                ;;
        *\`*)
                echo "Rejected"
                ;;
        rsync\ --server*)
                $SSH_ORIGINAL_COMMAND
                ;;
        *)
                echo "Rejected"
                ;;
esac

As root

rsync -avz --delete --exclude=**/stats --exclude=**/error --exclude=**/files/pictures -e "ssh -i /root/rsync/mirror-rsync-key" someuser@server1.example.com:/var/www/ /var/www/

------------------- Note
-exclude-from="/path/to/file"
/backup/
/bin/
/dev/
/initrd/

--delete-excluded
-------------------
cron job
*/5 * * * * /usr/bin/rsync -azq --delete --exclude=**/stats --exclude=**/error --exclude=**/files/pictures -e "ssh -i /root/rsync/mi
rror-rsync-key" someuser@server1.example.com:/var/www/ /var/www/

----- 
rsync -avz --delete -e ssh raffi@krpan:~/somedir/ somedir