Question

I have an input list that is being provided by a system that tracks metrics. I need to sort it in order to remove usage data that is below a given threshold and I really have no idea how to approach it. The data that is fed to me should look similar to this:

ID                    Usage                  Estimated Cost
------------------------------------------------------------------
University Name       260000                 1600.00

The first field will be a name, and the following two fields will be integer values.
I was thinking about trying to create list of lists, but there is probably an easier way.
How would I go about removing just getting the 3 fields and sorting them by the usage value?

Answer 1

A list of lists is pretty easy.

my @list;
while(<>) {
    push @list, [$_,(split(/\s+/,$_,3))[1]];
}
foreach my $out (sort {$a->[1] <=> $b->[1]} @list) {
    print $out->[0];
}