Sync folder in real time

#!/bin/bash

usage() {
  echo "sync.sh --from from_path --to to_path [--excl excl_path]"
}

excl_opts=""
while [ ! -z "$1" ]; do
  case "$1" in
    -f|--from) from=$2 ; shift 2 ;;
    -t|--to) to=$2 ; shift 2 ;;
    -e|--excl) excl_opts="$excl_opts --exclude=$2" ; shift 2 ;;
    *) usage  ; exit 2 ;;
  esac
done

if [ -z $from -o -z $to ]; then
  usage
  exit 2
fi

cd $from
from="$(pwd)/"

to="${to%/}/"

echo "Syncing $from to $to"

source /me/workspace/watchdog/bin/activate

opts="-avh --delete --exclude=.git $excl_opts"

rsync $opts $from $to

watchmedo shell-command --command "rsync $opts $from $to" --wait --recursive $from