gistfile1.sh

#!/bin/bash
ENV='dev'
SITE='XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX'

while [ 1 ]
do
    rsync --partial -rlvz --size-only --ipv4 --progress -e 'ssh -p 2222' ./files/* $ENV.$SITE@appserver.$ENV.$SITE.drush.in:files/
    if [ "$?" = "0" ] ; then
        echo "rsync completed normally"
        exit
    else
        echo "Rsync failure. Backing off and retrying..."
        sleep 180
    fi
done