perl some urls

http://www.elated.com/articles/form-validation-with-perl-and-cgi/
http://www.tutorialspoint.com/perl/perl_cgi.htm
http://troubleshooters.a3b3.com/codecorn/littperl/perlcgi.htm
http://www.slac.stanford.edu/slac/www/resource/how-to-use/cgi-rexx/
http://www.pageresource.com/cgirec/ptut18.htm
http://perl.about.com/od/perltutorials/a/hellocgi.htm
http://www.unix.org.ua/orelly/linux/cgi/ch02_02.htm
http://www.comp.leeds.ac.uk/cgi-bin/Perl/environment-example?lights=on
http://www.htmlite.com/perl016.php