<div dir="ltr">Maybe use:<div><br></div><div>Perl Net::DNS::Dig ?<br></div><div><br></div><div>Never tried it but it looks like it returns a lot of information similar to dig.</div><div><br></div><div>John</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Apr 6, 2016 at 3:41 PM, Trevor Cordes <span dir="ltr"><<a href="mailto:trevor@tecnopolis.ca" target="_blank">trevor@tecnopolis.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 2016-04-06 Robert Keizer wrote:<br>
> Why don't you use dig+grep+sed in bash?<br>
<br>
</span>Ya, that's one of the ideas (dig). It looks like dig will<br>
differentiate between named down, vs blocked 53, vs simple invalid<br>
domain.<br>
<br>
I'm trying to see if there are other ways also, perhaps ones that don't<br>
require a fork. And the dig will send out real queries to real<br>
servers, but I guess it will be tempered by the cache? I'll have to<br>
test what dig does in the different failure modes when a) resolving a<br>
domain that isn't cached vs b) resolving one that is cached.<br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature">John Lange<br><a href="http://www.johnlange.ca" target="_blank">www.johnlange.ca</a></div>
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