Note that you can use the standard while (<>) { ... } idiom here: 
{
  local($/) = \$record_length;
  my $first_record = <recordline>;
  $/ = \(512*1024);
  while (<recordfile>) {
    print newrecordfile;
  }
}

[download]
Alternatively, you can seek() over the first record instead of reading it.

In reply to Re: Removing the first record in a file containing fixed records by pc88mxer
in thread Removing the first record in a file containing fixed records by sparkle

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