"toolic" code will make it sleep at 10th line but if u need to read every 10th line following is the modified code

open (FILE,"file.txt");
while (my $data = <FILE>) {
  if($. % 10 ==0)
  {
    chomp($data);
    print ("$data\n");
    sleep 60;
  }
}
close(FILE);
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