nph>time cat numbers.csv | perl -nle'@d=split /,/;$a[$_]+=$d[$_] for (0..4);END{print join "\t", @a}' 249959157 249671314 249649377 250057435 249420634 real 0m17.10s user 0m15.46s sys 0m0.08s nph>time perl -nle'my @d=split /,/;$a[$_]+=$d[$_] for (0..4);END{print join "\t", @a}' numbers.csv 249959157 249671314 249649377 250057435 249420634 real 0m13.71s user 0m12.77s sys 0m0.04s nph>time perl -nle'my($a,$b,$c,$d,$e)=split /,/;$ta+=$a, $tb+=$b, $tc+=$c, $td+=$d, $te+=$e;END{print join "\t", $ta,$tb,$tc,$td,$te}' numbers.csv 249959157 249671314 249649377 250057435 249420634 real 0m6.45s user 0m5.91s sys 0m0.07s