Using the CGI module to print the html header and get query strings

#!/usr/bin/perl

use strict;
use CGI;

my $cgi = CGI->new();

print $cgi->header();

If you pass a query string such as ?var1=val1&var2=val2&var3=val3 you can access them with the $cgi->param('variable') as so, 

#!/usr/bin/perl

use strict;
use CGI;

my $cgi = CGI->new();

print $cgi->header();
print $cgi->param('val1');

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