I'm trying to determine if 2 jpeg images are identical. The images are screenshots taken with scrot at different times. The point is to know if the display is working correctly. I tried to use 'diff' but without success, probably because of the metadata included in the image. I also tried the

cmp does byte-to byte comparision.

if you want to make sure uncompressed bitmaps are the same then uncompress (cmp) and then compare
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