I have a DNS zone file that I parsed to just the network addresses. They look like this:

1.100.10
2.100.10
3.100.10

[download]

They are in "reverse" order and I'd like to find a Perl one-liner to put them right. I've already solved my problem with a script:

use strict;
use warnings;

open my $fh, "<", "zones.txt";
my @lines = <$fh>;
close $fh;

for (@lines) {
    chomp $_;
    my @F = split /\./, $_;
    print join ('.', reverse @F) . "\n"
}

[download]

Output would be like:

10.100.1
10.100.2
10.100.3

[download]

I'm sure there must be a one-liner with something like "perl -ape -F/./ "stuff here" zone.txt" ... but I just can't get it work. Of course I'm on Windows, so that makes the whole single quote / double quote thing a bit tricky too.

In reply to One liner help by VinsWorldcom

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