Some of my photos look different because I was not careful with saving with or without color profile. Now I would like to be able to find out what color profile is used by an image. Is there a simple tool to see this? Hopefully a command line one? I'll try to pay attention next time!
Have you got Adobe Bridge or Lightroom? Bridge can sort by Colour Profile, but I cannot find a way to do it in Lightroom, though it must exist (if it does in Bridge). This will only work in Windows or on a Mac though.
Alternatively, in Windows the colour profile is reported as part of the image properties, so it would just be an entry in metadata. So I would guess it should not be difficult to write a script that queries the metadata for every image, but I am the wrong person to tell you how to do that.
i tricked nikon scan into using prophoto rgb by swapping out the stored adobe rgb profile and renaming prophoto rgb as adobe rgb within nikon scan. was trying to find out how i did it 8 years ago.. having some trouble with posterizing skin tones in the poor underexposed images, but it is for archive so in the future that may become easier...