ppmpat
Produce a PPM image with a pattern. More information: https://netpbm.sourceforge.net/doc/ppmpat.html.
- Produce a PPM file of the specified pattern with the specified dimensions:
ppmpat -{{gingham2|gingham3|madras|tartan|poles|...}} {{width}} {{height}} > {{path/to/file.ppm}}
- Produce a PPM file of a camo pattern using the specified colors:
ppmpat -camo -color {{color1,color2,...}} {{width}} {{height}} > {{path/to/file.ppm}}