/usr/share/doc/libgtk2-notify-perl/examples/basic.pl is in libgtk2-notify-perl 0.05-5.
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 | #!/usr/bin/perl
use strict;
use warnings;
use Gtk2::Notify -init, 'Basic';
my $n = Gtk2::Notify->new('Summary', 'This is some sample content');
$n->show;
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