MacOS rsync with retries every 120 seconds

rsync-with-retries.sh

#!/bin/bash

ADDITIONAL_KEYS=""
if [ ! -z "${3}" ] 
then
   ADDITIONAL_KEYS="${3}"
fi

echo "==============================="
echo "===== CUSTOM RSYNC SCRIPT ====="
echo "==============================="
echo 'Sync '$1' to '$2
echo "With params:""${ADDITIONAL_KEYS}"
echo "==============================="

while [ 1 ]
do
    rsync -Pav --rsh ssh --partial --exclude="*.icloud" --exclude=".DS_Store" $ADDITIONAL_KEYS "${1}" "${2}"
    if [ "$?" = "0" ] ; then
        echo "==============================="
        echo "====== C O M P L E T E D ======"
        echo "==============================="
        exit
    else
        echo "-------------------------------------------"
        echo "Rsync failure. Backing off and retrying... "
        echo "-------------------------------------------"
        sleep 120
    fi
done