The entire expression must be in parens.

You also have logic errors. Your expression will always be true. 

if (  $line !~ m/^2/
   || (  substr($line, 14, 3) ne '800'
      && substr($line, 14, 3) ne '866'
      && substr($line, 14, 3) ne '877'
      && substr($line, 14, 3) ne '888'
      )
   )
{
   ...
}

[download]

That could be simplified using a regexp or a lookup table 

if (  $line !~ m/^2/
   || substr($line, 14, 3) !~ /^(?:800|866|877|888)\z/
   )
{
   ...
}

[download]
my %tollfree = map { $_ => 1 } 800, 866, 877, 888;

if (  $line !~ m/^2/
   || !$tollfree{ substr($line, 14, 3) }
   )
{
   ...
}

[download]

In reply to Re^3: Ignoring lines in flat text file by ikegami
in thread Ignoring lines in flat text file by sheasbys

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