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Digital cameras embed EXIF data into the images they create indicating which orientation the photo was taken in. Some viewers and editors are smart enough to read this, but many are not (and web browsers ignore it). jhead is one of not many tools available that can losslessly rotate jpeg images. This command reads the EXIF orientation of each image, and rotates it if necessary.
There are 2 alternatives - vote for the best!
If you can do better, submit your command here.
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