grd2cpt(1gmt) on Linux
The text 8580d0e2e6a6, as Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
Read a grdfile and make a color palette file
Flags it lists
-
-C -
-I -
-L -
-S -
-V -
-Z