Rclone copy with transfer limit

#!/bin/bash


# Edit me
rclone_bin="/rclone/rclone"
rclone_options="--config=/rclone/rclone.conf --buffer-size 500M --checkers 16"
rclone_cloud_endpoint="gd:"
local_dir="/documents"
limit_gb=750
################################################################################



if pidof -o %PPID -x "$(basename "$0")"; then
	echo "[ $(date +%F@%T) ] Upload already in progress. Aborting."
	exit 3
fi


today_gb=$limit_gb
# Generate filelist and iterate through it...
find "${local_dir}" -type f |
	while read -r n; do

		# Find the pathname relative to the root of your remote and store filename
		filename="$(echo "$n" | sed -e s@"${local_dir}"@@)"
		destpath="$(dirname "$n" | sed -e s@"${local_dir}"@@)"

		# Skip hidden or partial files.
		case "$n" in
			(*.partial~) continue ;;
			(*_HIDDEN~) continue ;;
			(*.QTFS) continue ;;
			(*.fuse*) continue ;;
			(.DS_STORE) continue ;;
		esac

        fileSize=$(du -sb "$n" | awk '{print $1}')
        fileSizeGb=$(($fileSize / 1000 / 1000 / 1000))

        today_gb=$(($today_gb-$fileSizeGb))

        if [ "$today_gb" -le "0" ]; then
            echo "Transferred $(($limit_gb-$fileSizeGb)) GB today. Waiting 24 hours"
            sleep 24h
            today_gb=$limit_gb
        fi

		# If file is opened by another process, wait until it isn't.
		while [ "$(lsof "$n" >/dev/null 2>&1)" ] || \
			[ "$(lsof "${local_dir}/${n}" >/dev/null 2>&1)" ]; do
			echo "[ $(date +%F@%T) ] File -> ${n} in use. Retrying in 10 seconds."
			sleep 10
		done

		# Copy file to remote destination[s], retaining path
		echo "[ $(date +%F@%T) ] Transfering file -> ${n} to ${rclone_cloud_endpoint} in ${destpath}."
		"${rclone_bin}" copy $rclone_options "$n" "${rclone_cloud_endpoint}${destpath}" >/dev/null 2>&1
	done

# success!
exit 02