lftp -u ${username},${password} -p ${port} ftp://${host} -e "mirror --continue --delete --no-perms --reverse --verbose /mnt/nas/music/curr/ Music/; quit"
lftp ftp://${username}:${password}@${host}:${port}
while IFS='=' read -r key value; do
case "${key}" in
hostname) host=${value} ;;
port) port=${value} ;;
username) username=${value} ;;
password) password=${value} ;;
esac
done < ${filename}