/usr/share/dune-grid/grids/dgf/examplegrid2e.dgf is in libdune-grid-dev 2.5.1-1.
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 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | DGF
vertex
parameters 2
-1 -1 0 -1
1 -1 1 1
1 1 2 1
-1 1 1 -1
0.75 0.75 2 0.75
0.90000000000000002 0.90000000000000002 2 0.90000000000000002
1.25 1.25 -1 1.25
#
simplex
parameters 1
0 4 3 1
4 0 1 -1
3 4 5 1
5 1 2 1
1 5 4 -1
2 6 3 1
6 2 1 -1
5 2 3 -1
#
boundarydomain
default 1
#
Simplexgenerator
min-angle 30 % quality enhancment
max-area 0.01 % area restriction
display 0 % show result using Triangle viewer
% to use Triangle from a certain path, uncomment this path line
% path $HOME/bin % path to Triangle
#
# examplegrid2e.dgf
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