>Could you (or any kind-hearted individual) provide any idea or
>feedback about http://gimpchat.com ?
I would certainly recommend you post your requirement at GimpChat as there are
a few people there who could create the script you require.
You may also find this useful, as you are working with a Linux OS:
https://www.imagemagick.org/Usage/crop/
Imagemagick is a very versatile tool for doing repetitive operations on
images. In your use case, it would be possible to run the program
twice, to save cropped copies of the right half of
