/usr/share/doc/ruby-graphviz/examples/sample02.rb is in ruby-graphviz 1.2.3-1ubuntu1.
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 35 36 37 38 39 40 41 42 | #!/usr/bin/ruby
$:.unshift( "../lib" );
require "graphviz"
g = nil
if ARGV[0]
g = GraphViz::new( "G", :path => ARGV[0] )
else
g = GraphViz::new( "G" )
end
g.node[:shape] = "ellipse"
g.node[:color] = "black"
g.edge[:color] = "black"
g.edge[:weight] = "1"
g.edge[:style] = "filled"
g.edge[:label] = ""
g[:size] = "4,4"
main = g.add_nodes( "main", :shape => "box" )
parse = g.add_nodes( "parse" )
execute = g.add_nodes( "execute" )
init = g.add_nodes( "init" )
cleanup = g.add_nodes( "cleanup" )
make_string = g.add_nodes( "make_string", :label => 'make a\nstring' )
printf = g.add_nodes( "printf" )
compare = g.add_nodes( "compare", :shape => "box", :style => "filled", :color => ".7 .3 1.0" )
g.add_edges( main, parse, :weight => "8" )
g.add_edges( parse, execute )
g.add_edges( main, init, :style => "dotted" )
g.add_edges( main, cleanup )
g.add_edges( execute, make_string )
g.add_edges( execute, printf )
g.add_edges( init, make_string )
g.add_edges( main, printf, :color => "red", :style => "bold", :label => "100 times" )
g.add_edges( execute, compare, :color => "red" )
g.output( :png => "#{$0}.png" )
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