my @programs = ("/cgi-bin/c++prog1",
                "/cgi-bin/c++prog2",
                "/cgi-bin/c++prog3",
                "/cgi-bin/c++prog4"
);

foreach (@programs)
{
     open (F, "$_|");
     while (<F>)
     {
          print;
     }
     close (F);
}