A simple script to sync remote hosts, steps to achieve it :

1.Avoid SCP prompting for password [ local host ] => ssh-keygen -t dsa -b 2048 -f ~/key.pub

2.SCP the key for the first time to the [ remote host ] =>

scp ~/key.pub remoteuser@remotehost:/home/remoteuser/

1. In remote host : [ Authorize the Host from which key was received ]

if [ ! -d .ssh ]; then mkdir .ssh chmod 700 .ssh fi mv key.pub .ssh/ cd .ssh/ if [ ! -f authorized_keys ]; then touch authorized_keys chmod 600 authorized_keys ; fi cat key.pub >> authorized_keys

"rsync + Cron jobs" to keep both the hosts in sync :

#

!/bin/sh

RSYNC=/usr/bin/rsync SSH=/usr/bin/ssh KEY=/home/whoami/key.pub LOCAL_PATH=/sync/dir REMOTE_USER=remote-user REMOTE_HOST=remote-host REMOTE_PATH=/remote/dir

$RSYNC -az -e "$SSH -i $KEY" \ $REMOTE_USER@$REMOTE_HOST:$REMOTE_PATH $LOCAL_PATH

#

Setting up cron

mv syncScp.sh /etc/cron.daily/

or

crontab -e

0 5 * * 5 /home/you/syncScp.sh