gdal_proximity(1) on Linux
The text a55a97a5a1c9, as Debian 11 (Bullseye) shipped it.
Produces a raster proximity map.
Flags it lists
-
-co -
-distunits -
-dstband -
-fixed-buf-val -
-maxdist -
-nodata -
-of -
-ot -
-srcband -
-use_input_nodata -
-values