grdmask(1gmt) on Linux
The text 0003adbd8e04, as Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
Create mask grdfiles from xy paths.
Flags it lists
-
-A -
-F -
-G -
-H -
-I -
-L -
-M -
-N -
-R -
-S -
-V -
-bi