/usr/share/doc/libgraphviz-perl/examples/yapp.pl is in libgraphviz-perl 2.04-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | #!/usr/bin/perl -w
#
# This is an example of using GraphViz::Parse::Yapp
# to graph a simple Yapp grammar (well, the Ruby grammar
# converted to Parse::Yapp)
use strict;
use lib '../lib';
use GraphViz::Parse::Yapp;
my $g = GraphViz::Parse::Yapp->new('Yapp.output');
$g->as_png("yapp.png");
|