exec "/home/myuser/www/cgi-bin/foo/bar/import.pl $fn";
system "/home/myuser/www/cgi-bin/foo/bar/import.pl $fn";
exec "/home/myuser/www/cgi-bin/foo/bar/import.pl", $fn;
system "/home/myuser/www/cgi-bin/foo/bar/import.pl", $fn;