tldr/pages/common/ppmcolormask.md

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# ppmcolormask
> Produce a mask of areas of a certain color in a PPM image.
> More information: <https://netpbm.sourceforge.net/doc/ppmcolormask.html>.
- Produce a mask of areas of a certain color in the specified PPM image:
`ppmcolormask -color {{red,blue}} {{path/to/input.ppm}} > {{path/to/output.pbm}}`