By thx. - 04/08/2016 20:35 - United States - Denver
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Can't you instruct her on how to properly scan said documents? Nonetheless that's quite interesting that she's working the scanner but doesn't know how it works... Haha
You can use a tool like imagemagick to rotate a lot of images very quickly. This is easy when they are consistent -- you just run `mkdir -p rotated; for a in *.png; do convert -rotate 180 $a rotated/$a; end` and Bob's your uncle. (Modifying this for Windows is left as an exercise for the reader.) But when they're inconsistent, you have to go through and identify each item to be flipped. That's strictly worse.