ppm2tiff(1) on Linux
The text fc606bcb4dbf, as Debian 13 (Trixie) shipped it. The page shows this text now.
create a TIFF file from PPM, PGM and PBM image files Synopsis ppm2tiff [ options ] [ input.ppm ] output.tif
Flags it lists
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-R -
-c -
-r