tldr/pages/common/ppmhist.md

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# ppmhist
> Print a histogram of the colors present in a PPM image.
> More information: <https://netpbm.sourceforge.net/doc/ppmhist.html>.
- Generate the histogram for human reading:
`ppmhist -nomap {{path/to/image_file.ppm}}`
- Generate a PPM file of the colormap for the image, with the color histogram as comments:
`ppmhist -map {{path/to/image_file.ppm}}`
- Display version:
`ppmhist -version`