As others have already leaped to point out, the CGI module is your friend. I would point you to our own Ovid's CGI course for a gentle introduction to writing CGI scripts, with a keen eye on the security thereof.

perl -pe '"I lo*`+$^X$\"$]!$/"=~m%(.*)%s;$_=$1;y^`+*^e v^#$&V"+@( NO CARRIER'