xyz2grd(1gmt) on Linux
The text 3e9647fe8723, as Debian 8 (Jessie), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
Converting an ASCII or binary table to grd file format
Flags it lists
-
-: -
-A -
-D -
-F -
-G -
-H -
-I -
-L -
-N -
-R -
-S -
-V -
-Z -
-bi