knoppix@Microknoppix:~/data$ perl -E ' > open my $inFH, q{<}, \ < 01-16A1-325 01-16A1-325 01-16A1-325 01-16A1-325 > 01-16A1-325 01-16A1-325 01-16A1-325 01-16A1-325 > A T G C > 11 47 0 1 > 11 47 0 0 > 11 48 0 0 > EOD > > while ( <$inFH> ) > { > printf qq{%15s%15s%15s%15s\n}, split; > }' 01-16A1-325 01-16A1-325 01-16A1-325 01-16A1-325 01-16A1-325 01-16A1-325 01-16A1-325 01-16A1-325 A T G C 11 47 0 1 11 47 0 0 11 48 0 0 knoppix@Microknoppix:~/data$