asflip(3x) on Linux
The text 463db6b47129, as Debian 9 (Stretch) shipped it.
demonstrates flipping image in 90 degree increments libAfterImage/tutorials/ASFlip
The text 463db6b47129, as Debian 9 (Stretch) shipped it.
demonstrates flipping image in 90 degree increments libAfterImage/tutorials/ASFlip