/usr/share/gmt/custom/astroid.def is in gmt-common 5.3.1+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | # $Id: astroid.def 12822 2014-01-31 23:39:56Z remko $
#
# Definition file a convex 4-pointed star symbol.
#
0 0.5 M
0.5 0.5 1 180 270 A
0.5 -0.5 1 90 180 A
-0.5 -0.5 1 0 90 A
-0.5 0.5 1 270 360 A
|