Hi there:

I don't know if you did look at it, but Net::DNS::ZoneFile will parse most BIND zone files, returning a list of Net::DNS::RR objects as the result.

You can then act on the objects themselves, remove them from the list or add new ones. Finally, you can simply print them to a new file. The pseudo-code would look like:

use Net::DNS;
use Net::DNS::ZoneFile;

my $rrs = Net::DNS::ZoneFile->read("/var/named/named.local",
                   { 
                       # You might need to set the
                       # $ORIGIN explicitly here if
                       # your zone file does not make
                       # this explicit. See perldoc
                   }
);

# Print the RRs that were fetched
print $_->string, "\n" for @$rrs;

# Add a sample RR
push @$rrs, new Net::DNS::RR "3 7200 IN PTR always-listed.your.domain.
+";

# Update the serial :)
# You can also "replace" the current serial, with the current date,
# as commonly recommended. However, if you're looking into this, you
# probably have better change control on your zones already.
foreach (@$rrs)
{
    next unless $_->type eq 'SOA' and $_->class eq 'IN';
    $_->serial($_->serial + 1);
}

# Print the resulting RR set (this could be your new zone by printing 
+to
# a file)
print $_->string, "\n" for @$rrs;
[download]

Feel free to ask if you need further help with this code...

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