in reply to RegEx & Approach Question

The following would speak if 0/75/0/39 (field 3) OR 19845805
is non zero, "$a != 0 OR $b != 0":
# ... printf "%-20.20s %-22.22s : $line\n", $file, $currentInterface if $line =~ m{e:\s+\d+/\d+/(\d+)/.+?:\s(\d+)$} && ($1 || $2); # ...
I'm not sure what your condition really means. *When* exactly do you
want to print the line?

Regards

mwa