Addition to: How do I find out my hostname/domainname/IP address?

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> 9.23: How do I find out my hostname/domainname/IP address?
>
>        my $addr = inet_ntoa(scalar gethostbyname($host || 'localhost'));

If the host name is not important, that can be simplified to:

	my $addr = join(".", unpack C4,((gethostbyname "")[4]));
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