psbasemap(1gmt) on Linux
The text 0a9a75b3c051, 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.
To plot PostScript basemaps
Flags it lists
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-B -
-E -
-G -
-J -
-Jz -
-K -
-L -
-P -
-R -
-U -
-V -
-X -
-Y -
-Z -
-bo -
-c