I’m trying to get exiv2 to do XMP IPTC updates to images. I know I can do this with the following command (read from a file): 

> exiv2 -i X filename.JPG
requires having filename.xmp to reference.

But the script is going to do this 200 to 300 times in a folder, maybe more, and it would make more sense to have 1 file it references. Is that possible?

Any thoughts? I can create and delete the file (copy/delete, really) each time but I’d prefer to avoid that.

Thanks,
Ryan