Abolish domain-names! Forget ip-addresses! Use easy-to-remember decimal numbers!

It's not exactly complicated code, but a lot of people don't know you can also use decimals instead of ip-addresses: for 206.170.14.75, convert each element into its binary equivalent, join the four strings and convert the resulting string into decimal (which will be a number less than 2^32). 
#!/usr/bin/perl -w

use strict;
use Socket;

for my $host (@ARGV) {
        my $addr = inet_ntoa( scalar gethostbyname($host) );
        my $bin;

        $bin .= dec2bin($_) for (split /[.]/, $addr);
        print bin2dec($bin), "\n";
}

sub bin2dec {
        unpack("N", pack("B32", substr("0" x 32 . shift, -32)));
}

sub dec2bin {
        my $str = unpack("B32", pack("N", shift));

        # we only need the lowest 8 bits (ipv4 range 0-255)
        return substr $str, length($str) - 8;
}

[download]

Example: 
[ar0n@zendo perl]% perl ip2dec.pl perlmonks.org
3467251275

[download]
Now load up your browser and be amazed! (your perlmonks cookie will, of course, not work)

In reply to Convert hostname to decimal form by ar0n

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