Look out! If you're going to use the "|| die" syntax instead of "or die", you need to put parentheses around the arguments to opendir.

opendir (FOO, $bar) || die "No dice";
[download]

and

opendir FOO, $bar or die "No dice";
[download]

are equivalent: they try to open the dirhandle FOO to the directory listed in $bar, and if opendir fails, they die. But

opendir FOO, $bar || die "No dice";
[download]

is equivalent to

opendir FOO, ($bar || die "No dice");
[download]

which means that die is only called if $bar is empty, not if opendir fails. Which is unlikely to be what you intended.

---

If God had meant us to fly, he would *never* have give us the railroads.
    --Michael Flanders