Examples (1)
Invert the colors or greyscale values in a PNM image
pnminvert path/to/input.pnm > path/to/output.pnmmade by @shridhargupta | data from tldr-pages
Invert the colors or greyscale values in a PNM image
pnminvert path/to/input.pnm > path/to/output.pnm