CGI.pm should already be installed on your system as it comes with Perl, I believe. Do perldoc CGI to see if it's installed. It's a Perl module that gives you nice and easy access to all of the CGI parameters passed in to your script.

You should put

use CGI;
my $query = new CGI;
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at the top of your script before you do anything like

my $name = $query->param('name');
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