You don't need the map function, rchou2. You took care of everything by using the for() loop. However, you did not split the data into fields.
Here's one way to do what you are asking, that borrows most of the syntax preferences from your example:
#!/usr/bin/perl -w
use strict;
rename 'tempfile.txt', 'tempfile.txt~'; # save a backup
open TEMPFILE, "<tempfile.txt~" or die $!;
my @data;
my @newcolumn = qw(d
e
f);
my $incr = 0;
for my $line (<TEMPFILE>) {
my @elements = split(/\s+/g, $line); # split the line on all w
+hitespace
push @elements, $newcolumn[$incr++]; # add a new column
push @data, \@elements; # need to store as ref
}
close TEMPFILE;
@data = sort { $$a[2] cmp $$b[2] || $$b[1] <=> $$a[1] } @data # or d
+ie "can't sort";
$, = " " ; # separate output fields by a space
open OUTFILE, ">tempfile.txt" or die $!;
foreach my $item (@data){
print OUTFILE "@$item\n";
}
close OUTFILE;
__END__
mkmcconn