pnmcolormap(1) on Linux
The text cde85085f483, as Debian 13 (Trixie) shipped it.
create quantization color map for a Netpbm image
Flags it lists
-
-center -
-debug -
-meancolor -
-meanpixel -
-sort -
-splitcolorct -
-splitpixelct -
-splitspread -
-spreadbrightness -
-spreadluminosity -
-square -
-verbose