while($count < 155){ my $output_file = "$output_dir"."compute_minor_alleles_28_males."."$count".".txt"; open(OUT, ">$output_file"); print OUT "position\tminor allele frequency\n"; my $input_file = "$input_dir"."temp_file_". "$count."."txt"; open (CG, "<$input_file") or die "Cannot open $input_file:$!\n"; while (my $cg = ){ if ($cg =~ /NA/){ next; } chomp($cg); #get rid of newline character @info = split(" ", $cg);