If you just want a warning, then change the push if -e line to..

if -e $file {
     push @array, $file;
} else {
     warn "$file does not exist\n";
}
[download]

If you want to process such a list later, push the items into a second array:

if -e $file {
     push @array, $file;
} else {
     push @not_found, $file;
}
[download]

---

Dr. Michael K. Neylon - mneylon-pm@masemware.com || "You've left the lens cap of your mind on again, Pinky" - The Brain