in reply to Re^9: Extracting Data from a second line
in thread Extracting Data from a second line

If you wish to know the size of DATA, in characters, use the following. It will work on with all line terminators and will all encodings.

$size_of_DATA = read(DATA, $buf='', -s DATA);

It's safe to use -s FILE because the number of characters in a file should never be bigger than the number of bytes in a file.