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Posted Feb 25, 2005 20:20 UTC (Fri) by grouch (guest, #27289)
In reply to: card reader dangers by ncm
Parent article: The Grumpy Editor plugs in his camera

"Incidentally, I use flphoto to sort through pictures -- mainly just to turn them upright. One of its unusual merits is that it can losslessly rotate the pictures. That is, instead of reading and decompressing a jpeg, rotating it, and then re-encoding a new jpeg, it operates on the compressed jpeg data directly. Oddly, flphoto isn't in the Debian repository, so it's one of very few programs on my systems that I had to build myself."

apt-get install imagemagick

You can then use mogrify to rotate your images, for example:

mogrify -compress lossless -rotate +90 myphoto.jpg

some links that may help

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