http://www.perlmonks.org?node_id=355853


in reply to Re: Re: Parsing Multiple Lines.
in thread Parsing Multiple Lines.

Use of uninitialized value in pattern match (m//) at parse.pl line 16, <$fh> line 731

A warning that tells you the variable you perform a pattern match was empty at the point given
(line 16 in your code and line 731 in the file you're reading from.)