watch_sync.sh

#!/bin/bash

#####
# IMPORTANT!
# - Install rsync and inotify-tools
# - For better usage, config your ssh conections and keys
#####

if [ $# -lt 3 ]; then
    echo "An origin path, a destination path and a user@server must be set (in this order)."
    exit 1
fi

origin="$1"
destination="$2"
remote="$3"

if [ ! -d "$origin" ]; then
    echo "Invalid origin path."
    exit 1
fi

if ssh -p 22 -tt $remote "test ! -d $destination"; then
    echo "Destination path does not exists or it is unavailable."
    exit 1
fi

while true; do
    inotifywait -r -e "CREATE,CLOSE_WRITE,DELETE,MODIFY,MOVED_FROM,MOVED_TO" $origin
    rsync -Cravz --delete $origin $remote:$detination
done