gdal_proximity(1) on Linux
The text 1be58054ea35, as Debian 8 (Jessie) shipped it.
gdal_proximity.py produces a raster proximity map
Flags it lists
-
-co -
-distunits -
-dstband -
-fixed-buf-val -
-maxdist -
-nodata -
-of -
-ot -
-srcband -
-values