Perl Progress Bar

http://www.varioustopics.com/perl/1015133-term-progressbar-problems-with-multiple-calls.html
http://search.cpan.org/~szabgab/Term-ProgressBar-2.13/lib/Term/ProgressBar.pm
http://oreilly.com/pub/h/943
www.disobey.com/detergent/code/progressbar_4_tpb.pl