home.pl
$cg = new CGI;
my $cookie = $cg->cookie(-name => 'id',
                          -value => $user,
                          -expires => '+2m',
                          -path => '/');
       print $cg->redirect("wel.pl");
       print $cg->header(-cookie => $cookie);


wel.pl
my $cookie = $cg->cookie('id');
if ( ! $cookie )
{
  print $cg->redirect("home.pl");
}
elsif($cookie) {
#continue to the site if cookie exists 
}
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