Digging to the final IP

[LuKreme]

> On 21 Oct 2014, at 22:46 , Jim Young <jyoung at gsu.edu> wrote:
> 
> On 10/22/14 12:08 AM, "LuKreme" <kremels at kreme.com> wrote:
> 
>>> On 21 Oct 2014, at 19:20 , Dave Knight <dave at knig.ht> wrote:
>>> 
>>> $ dig +noall +answer dave.knig.ht in a | egrep 'IN\tA\t' | cut -f6
>>> 216.235.14.46
>> 
>> Interesting. This works for me:
>> 
>> dig +noall +answer home.kreme.com in a | egrep '\tA' | cut -f5
>> 
>> but on your example, it requires -f6
>> 
>> And yet, the outputs appear to have the same number of fields.
>> 
>> $ dig +noall +answer www.kreme.com in a
>> www.kreme.com.		21139	IN	CNAME	cerebus.kreme.com.
>> cerebus.kreme.com.	21141	IN	A	23.24.150.141
>> $ dig +noall +answer dave.knig.ht in a
>> dave.knig.ht.		13916	IN	CNAME	sb.sanxion.org.
>> sb.sanxion.org.		222	IN	A	216.235.14.46
>> 
>> Very odd.
> 
> Subtle formatting difference for human consumption.  There are a variable
> number of ASCII TABs inserted to visually align fields.

Yeah, I saw the extra space after 222, but did not check for a second tab following sb.sanxion.org.

> This is where output generated for human consumption can be tricky to
> parse.

That’s why I like dig +short


-- 
BART BUCKS ARE NOT LEGAL TENDER Bart chalkboard Ep. 8F06