/usr/bin/get_root_domain is in libdomain-publicsuffix-perl 0.14.1-3.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | #!/usr/bin/perl
use strict;
use warnings;
use Domain::PublicSuffix;
my $domain_name = shift(@ARGV);
usage('Requires a domain name to continue.') unless ( $domain_name );
my $suffix = Domain::PublicSuffix->new();
printf( "%12s: %s\n", 'Domain', $domain_name );
my $root_domain = $suffix->get_root_domain($domain_name);
if ( $suffix->error ) {
printf( "%12s: %s\n", 'Error', $suffix->error );
exit(1);
} else {
printf( "%12s: %s\n", 'Root Domain', $root_domain );
printf( "%12s: %s\n", 'Suffix', $suffix->suffix );
printf( "%12s: %s\n", 'TLD', $suffix->tld );
}
sub usage {
my ( $error ) = @_;
print "get_root_domain - Domain::PublicSuffix " . $Domain::PublicSuffix::VERSION . "\n";
print "Usage: get_root_domain <domainname>\n";
exit(1);
}
1;
__END__
=head1 NAME
get_root_domain - Retrieve suffix info from a domain using Domain::PublicSuffix
=head1 DESCRIPTION
The get_root_domain utility uses Domain::PublicSuffix to get the root or
suffix for a fully qualified domain name. Given a FQDN, this utility will output
the "root domain", and the suffix and TLD used to calculate that root domain.
=over
=item * Public Info Site:
L<http://publicsuffix.org/>
=back
=head1 SYNOPSIS
get_root_domain <domainname>
=head1 EXAMPLE USAGE
=over
$ get_root_domain www.google.com
Domain: www.google.com
Root Domain: google.com
Suffix: com
TLD: com
$ get_root_domain www.google.co.uk
Domain: www.google.co.uk
Root Domain: google.co.uk
Suffix: co.uk
TLD: uk
=back
=head1 RETURN VALUES
Returns 0 if a successful lookup is done, non-zero otherwise.
=head1 SEE ALSO
Domain::PublicSuffix(3pm)
=head1 BUGS
Please report any bugs or feature requests to C<bug-domain-publicsuffix at rt.cpan.org>,
or through the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Domain-PublicSuffix>.
I will be notified, and then you'll automatically be notified of progress on
your bug as I make changes.
=head1 LICENSE
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
=cut
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