This is not directly about DT. But, I hope you guys (fellow users) will help me.
I have been trying to change the Author metadata of a large number of files in my library. I found a couple of terminal commands on the net that appear to do the task:
Exiftools has been great for modifying the metadata of images including pdf file. But, I couldn’t find a similar tool for textual files.
Thank you for the clarification dear @cgrunenberg