now this is a quick handy install for renaming batch folders of files, thunar is a lightweight file mananer which comes with available plugins which will do the renaming, so on ubuntu get a terminal and enter this
sudo apt-get install --no-install-recommends thunar
sudo apt-get install thunar-media-tags-plugin
so easy i selected insert / overwrite and insert and inserted the text i wanted to be added 🙂 simples.