Get folder size(s) in bytes in telegraf

get_folder_size.sh

#!/bin/bash

echo "["
du -bs "$@" | awk '{if (NR!=1) {printf ",\n"};printf "  { \"directory_size_bytes\": "$1", \"path\": \""$2"\" }";}'
echo
echo "]"

telegraf.conf

[[inputs.exec]]
  commands = [ "/etc/telegraf/scripts/get_folder_size.sh /mnt/movies /mnt/movies4k /mnt/tv /mnt/tv4k /mnt/disk_backup /mnt/ebooks /mnt/mwserver_backups /mnt/vm_image_backups" ]
  timeout = "5s"
  name_override = "dirsize"
  name_suffix = ""
  data_format = "json"
  tag_keys = [ "path" ]