Jhead: Auto-rotate and Reset Orientation
----------------------------------------
2006-03-11

You can use jhead (which calls jpegtran) to rotate a directory of JPG files and
resets the orientation flag to 1.  This will alter your original EXIF
orientation data.

-dt deletes the EXIF thumbnail
-autorot rotaties the image based on EXIF orientation data and resets to 1


1.  cd /path/to/jpegfiles
2.  jhead -dt -autorot *.jpg


For more info, visit:  http://www.sentex.net/~mwandel/jhead/