This code as written consumes the entire input file:
Stop reading more lines from the file once you have found the header line. 
my $header_line;
while (<$fh>) {
  next unless /^fieldname/; # skip to header line
  $header_line = $_;
  last;  ####### ADDD THIS #####
}

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In reply to Re: skip junk lines in csv before header by Marshall
in thread skip junk lines in csv before header by karlberry

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