Quick edits of jpg files from within Konqueror (jhead, jpegtran)

I wanted to have a quick way to rotate the images I take with my digital camera. The Olympus Camedia C-4000 always writes "1" als orientation into the EXIF data (either it doesn't have an orientaiton sensor or it is broken), therefore I cannot rotate the images automatically by the command

jhead -autorot *.jpg

So I created a desktop file ~/bin/rotate90clockwise.desktpop with the following content