On Oct 22, 2014, at 5:56, Niall O'Reilly <[email protected]> wrote:
> At Tue, 21 Oct 2014 22:31:28 -0500,
> Frank Bulk wrote:
>>
>> Dave,
>>
>> Thanks for the input, but what I was looking for was a dig command that
>> returns the IP(s) or a fail. It looks like the host command is the right
>> solution in this case, not dig.
>
> Doesn't egrep fail on no match?
It does, but the cut at the end of the pipeline swallows it’s exit status
We can still get that though…
$ dig +noall +answer dave.knig.ht in a | egrep 'IN\tA\t' | cut -f6
216.235.14.46
$ echo ${PIPESTATUS[1]}
0
$ dig +noall +answer hopefully.this.does.not.exist in a | egrep 'IN\tA\t' | cut
-f6
$ echo ${PIPESTATUS[1]}
1
That is if you’re using bash of course…
dave
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