my $pre = $ARGV[0];
my $linenum = 0;
my $filenum = 0;

open FILEOUT, '>', $pre."-".$filenum;

while (<>)
{
  if ($linenum <= 300000)
  {
    if (/^\r\n$/) # skip the linefeed carriage return lines, 
                  #  do not increment line
                  #  counter or print line to file
    {
    }
    else
    {
      print FILEOUT $_;
      $linenum++;
    }
  }
  elsif ($linenum > 300000)
  {
    if (/^\r\n$/)  # skip the linefeed carriage return lines, 
                   #  do not increment line 
                   #  counter or print line to file
    {
    }
    else
    {
      $linenum = 0;  # reset line counter every 300,000 lines
      $filenum++;    #  increment file counter every 300,000 lines 
                     #  and open new file handle
      open FILEOUT, '>', $pre."-".$filenum;
      print FILEOUT $_;
    }
  }
}
close FILEOUT;