The 't' and 'n' switches of $read seem to have slipped out of the code before you clicked Post Reply!
Not certainly in that way. Just given the condition of delivered the task, I do not consider it necessary to use excess additional switches inside the identifier "
$read()" while reading and checking the lines of the file containing only the numbers "
0-9", dots "
." and asterisks "
*". Because with a large number of IP addresses in the list, the script should work as efficiently and quickly as possible.