Nothing is done with | No change is made to the default value of  $/ (the input record separator; see perlvar), so readline (the  <$fh> expression) is reading newline-terminated lines. Then chomp removes the  $/ sequence (the newline) from each line. The  /.{20}\\[a-zA-Z]\s[\r\n]/ regex requires a  [\r\n] (carriage-return or newline) character to match, but chomp has removed the newline, and I doubt there is a  \r present with which to match in text that seems to come from a Windows directory listing (update: see this for a more thorough discussion of this point). 

c:\@Work\Perl\monks>perl -wMstrict -le
"print 'match with \r' if qq{ Directory of D:\\ \\Q\\X \r} =~ /.{20}\\
+[a-zA-Z]\s[\r\n]/;
 print 'match sans \r' if qq{ Directory of D:\\ \\Q\\X }   =~ /.{20}\\
+[a-zA-Z]\s[\r\n]/;
"
match with \r

[download]

Update: Beyond that, the
    next if $row =~ /REGEX/;
statement will skip printing if there is a match. You seem to want to print the line if there is a match, so something like
    next unless $row =~ /REGEX/;
still seems the way to go (once you get the regex right :) (Update: See also Marshall's reply. It seems like really good advice, although I see no need to stringize  "$line" when  $line is already a string read from a file.)

Give a man a fish:  <%-{-{-{-<

In reply to Re^3: How do I display only matches (updated) by AnomalousMonk
in thread (SOLVED) How do I display only matches by tem2

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