Sure ... some good examples are in the rsync man page. In a terminal issue "man rsync"
I backup my workstation to the LAN every night using passwordless login and ssh with this command:
rsync -va --exclude=WinXP.img --exclude=scratch.img --exclude='kernel' -e "ssh -o BatchMode=yes -o user=root -i /root/.ssh/identity.silas" silas:~mingdao /backup2/silas/
For just transferring some data, such as files after a fresh install:
rsync -va /directory/on/server/ /directory/on/client/
When using rsync if you leave off the trailing slash, it will transfer the directory ... /home/mingdao /server/backup/ copies the mingdao directory to /server/backup/mingdao/ ... but /home/mingdao/ /server/backup/ would just copy all the files in /home/mingdao/ to /server/backup/
I have a bash script (/usr/local/sbin/mirror-slackware-current.sh) cron that runs on my server every night to keep a mirror of Slackware -current on my server.
If something like that is not what you're looking for, or the man page is unclear, give a real example and someone can give you a command.
Was slow in posting and connection here is lowsy.
As billymayday said, make sure /etc/rc.d/rc.rpc is executable and the server is running.