Lossless rotate using command line

[JBenda]

Is it possible to perform a lossless rotate from the command line?
If this could be done based on the EXIF information, perfect, but just a lossless rotate from the command line would work for me as well.

[Sam_Zen]

From this file :

/rotate_r - rotate input image to right
/rotate_l - rotate input image to left

[mueslifreak]

batch-rotating losslessly via commandline

Hi!
I also would like to rotate jpgs losslessly via commandline.
Using only /rotate_r does not do the trick for me, because I would like to turn it without opening and saving it.
But then, if I use /rotate_r /convert=$F, perhaps with a quality value, it is not lossless anymore.
How can I (batch-)rotate jpg-images without opening them at all?

Thanx for your help!
Kind regards
Hauke

[mueslifreak]

Appendix: Found new Jpg_Transform-plugin - but problem remains

By chance I hit onto the new Jpg_Transform-plugin (after 4.10)
- but my problem remains: the image opens, instead of being losslessly and permanently rotated.
Thanx a lot for your input!
Kind regards
Hauke