Re: Digging to the final IP

[Doug Barton]

On 10/21/14 8:31 PM, 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.


Yep. :)

You can check the return value of the call to get your fail as well. For 
example:


$ host ajklasdfjklasd.com ; echo $?
Host ajklasdfjklasd.com not found: 3(NXDOMAIN)
1

hth,

Doug

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Re: Digging to the final IP

[Doug Barton]

It's interesting to see the discussion about trying to turn dig into 
something it isn't. :)  It's a really good DNS diagnostic tool, but if 
you just want to get the answer for a query, host does the job quite 
well, with a lot less fuss.


Doug

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Re: Digging to the final IP

[John Wobus]

On Oct 21, 2014, at 4:00 PM, Evan Hunt wrote:

On Tue, Oct 21, 2014 at 12:07:15PM -0700, Warren Kumari wrote:

dig A $name | awk '$0 ~ /status/ && $0 !~ /status: NOERROR,/ {
   sub(",", "", $6 ); print $6; x=1
  }
  $4 == "A" { print $5; x=1 }
  END { if (!x) print "TIMEOUT" }'



Because, not everyone is as stunningly brilliant as you?

To a non-zero population of this list the above looks like line- 
noise...


Could be worse, could be perl...


But if perl were acceptable,

perl -e 'printf "%vd\n", (gethostbyname "example.com")[4]'

John
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Re: Digging to the final IP

[Niall O'Reilly]

At Thu, 23 Oct 2014 15:17:49 +0100,
Sam Wilson wrote:
> 
> In article ,
>  Bob Harold  wrote:
> 
> > Anytime you see 'grep' and 'cut' used together, they can usually be
> > shortened to just 'awk', which requires starting one less process.  And if
> > this case it splits fields the way a users sees them, so the same code
> > works in both cases:
> > 
> > $ dig +noall +answer home.kreme.com in a | awk '/[\t ]A[\t ]/ {print $NF}'
> > 23.24.150.141
> > $ dig +noall +answer  dave.knig.ht in a | awk '/[\t ]A[\t ]/ {print $NF}'
> > 216.235.14.46
> 
> $ dig +noall +answer cancer.ucs.ed.ac.uk | perl -ne ' /\sA\s/ && do { 
> @_=split; print "$_[$#_]\n" }' 
> 129.215.166.13
> 129.215.200.7

  Which makes it easy, in either case, to return a status value, as
  Frank Bulk seemed to want.

  Something like

  '... {print $NF; count++} END {exit ! count}'

  or

  | perl -ane ' /\sA\s/ && do { print "$F[$#F]\n"; $count++ } END
{exit ! $count }'

  might work.

  Niall
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Re: Digging to the final IP

[Niall O'Reilly]

At Thu, 23 Oct 2014 15:17:49 +0100,
Sam Wilson wrote:
> 
> In article ,
>  Bob Harold  wrote:
> 
> > Anytime you see 'grep' and 'cut' used together, they can usually be
> > shortened to just 'awk', which requires starting one less process.  And if
> > this case it splits fields the way a users sees them, so the same code
> > works in both cases:
> > 
> > $ dig +noall +answer home.kreme.com in a | awk '/[\t ]A[\t ]/ {print $NF}'
> > 23.24.150.141
> > $ dig +noall +answer  dave.knig.ht in a | awk '/[\t ]A[\t ]/ {print $NF}'
> > 216.235.14.46
> 
> $ dig +noall +answer cancer.ucs.ed.ac.uk | perl -ne ' /\sA\s/ && do { 
> @_=split; print "$_[$#_]\n" }' 
> 129.215.166.13
> 129.215.200.7

  Which makes it easy, in either case, to return a status value, as
  Frank Bulk seemed to want.

  Something like

  '... {print $NF; count++} END {exit ! count}'

  or

  | perl -ane ' /\sA\s/ && do { print "$F[$#F]\n"; $count++ } END
{exit ! $count }'

  might work.

  Niall
  
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Re: Digging to the final IP

[Sam Wilson]

In article ,
 Bob Harold  wrote:

> Anytime you see 'grep' and 'cut' used together, they can usually be
> shortened to just 'awk', which requires starting one less process.  And if
> this case it splits fields the way a users sees them, so the same code
> works in both cases:
> 
> $ dig +noall +answer home.kreme.com in a | awk '/[\t ]A[\t ]/ {print $NF}'
> 23.24.150.141
> $ dig +noall +answer  dave.knig.ht in a | awk '/[\t ]A[\t ]/ {print $NF}'
> 216.235.14.46

$ dig +noall +answer cancer.ucs.ed.ac.uk | perl -ne ' /\sA\s/ && do { 
@_=split; print "$_[$#_]\n" }' 
129.215.166.13
129.215.200.7

Sam

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Scotland, with registration number SC005336.
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Re: Digging to the final IP

[Bob Harold]

Anytime you see 'grep' and 'cut' used together, they can usually be
shortened to just 'awk', which requires starting one less process.  And if
this case it splits fields the way a users sees them, so the same code
works in both cases:

$ dig +noall +answer home.kreme.com in a | awk '/[\t ]A[\t ]/ {print $NF}'
23.24.150.141
$ dig +noall +answer  dave.knig.ht in a | awk '/[\t ]A[\t ]/ {print $NF}'
216.235.14.46



-- 
Bob Harold
hostmaster, UMnet, ITcom
Information and Technology Services (ITS)
rharo...@umich.edu
734-647-6524 desk

On Wed, Oct 22, 2014 at 6:58 PM, LuKreme  wrote:

>
> > On 21 Oct 2014, at 22:46 , Jim Young  wrote:
> >
> > On 10/22/14 12:08 AM, "LuKreme"  wrote:
> >
> >>> On 21 Oct 2014, at 19:20 , Dave Knight  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
>
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Re: Digging to the final IP

[LuKreme]

> On 21 Oct 2014, at 22:46 , Jim Young  wrote:
> 
> On 10/22/14 12:08 AM, "LuKreme"  wrote:
> 
>>> On 21 Oct 2014, at 19:20 , Dave Knight  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

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Re: Digging to the final IP

[Dave Knight]

On Oct 22, 2014, at 5:56, Niall O'Reilly  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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Re: Digging to the final IP

[Niall O'Reilly]

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?
  Niall
  
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Re: Digging to the final IP

[Jim Young]

On 10/22/14 12:08 AM, "LuKreme"  wrote:

>> On 21 Oct 2014, at 19:20 , Dave Knight  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.

$ dig +noall +answer www.kreme.com in a | egrep '\tA' | cat -t
cerebus.kreme.com.^I21409^IIN^IA^I23.24.150.141

$ dig +noall +answer dave.knig.ht in a | egrep '\tA' | cat -t
sb.sanxion.org.^I^I299^IIN^IA^I216.235.14.46

There is only one ASCII TAB (represented as ^I with cat -t) between
"cerebus.kreme.com." and "21409." but two ASCII TABs between
"sb.sanxion.org." and "299".  I'm guessing a very short name might
result in three!

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

Best regards,

Jim Y.

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Re: Digging to the final IP

[David Ford]

# dig +noall +answer dave.knig.ht a|awk '/IN\tA\t/ {print $NF}'
216.235.14.46




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Re: Digging to the final IP

[LuKreme]

> On 21 Oct 2014, at 19:20 , Dave Knight  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.

I use:

 $ dig +short $HOSTNAME | tail -1


-- 
"A synonym is a word you use when you can't spell the word you first
thought of." - Burt Bacharach

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RE: Digging to the final IP

[Frank Bulk]

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.

Kind regards,

Frank

-Original Message-
From: Dave Knight [mailto:d...@knig.ht] 
Sent: Tuesday, October 21, 2014 8:21 PM
To: Frank Bulk
Cc: bind-users
Subject: Re: Digging to the final IP

On Oct 19, 2014, at 1:26, Frank Bulk  wrote:

> Is there a dig option that will list out the final (IPs) or query result??
> By default, even with +short, it can list intermediate CNAME(s) and not
what
> IP(s) that CNAME may have.  
> 
> For example, 
>   root@nagios:/tmp# dig mail.automatedwastesystems.net +short
>   mail3.sandhills.com.
>   root@nagios:/tmp#
> 
> I'd rather know that mail3.sandhills.com is NXDOMAIN.
> 
> Regards,
> 
> Frank


How about. 

$ dig +noall +answer mail.automatedwastesystems.net in a | egrep 'IN\tA\t' |
cut -f6

which correctly returns nothing in this case, but when there's a CNAME chain
ending in addresses it returns them

$ dig +noall +answer dave.knig.ht in a | egrep 'IN\tA\t' | cut -f6
216.235.14.46

and surely you want IPv6 support.

$ dig +noall +answer dave.knig.ht in a dave.knig.ht in  | egrep
'IN\t(A|)\t' | cut -f6
216.235.14.46
2001:4900:1:393::2

dave

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Re: Digging to the final IP

[Novosielski, Ryan]

 *Note: UMDNJ is now Rutgers-Biomedical and Health Sciences*
|| \\UTGERS  |-*O*-
||_// Biomedical | Ryan Novosielski - Senior Technologist
|| \\ and Health | novos...@rutgers.edu- 
973/972.0922 (2x0922)
||  \\  Sciences | OIRT/High Perf & Res Comp - MSB C630, Newark
`'

On Oct 21, 2014, at 16:00, Evan Hunt mailto:e...@isc.org>> wrote:

On Tue, Oct 21, 2014 at 12:07:15PM -0700, Warren Kumari wrote:
dig A $name | awk '$0 ~ /status/ && $0 !~ /status: NOERROR,/ {
   sub(",", "", $6 ); print $6; x=1
  }
  $4 == "A" { print $5; x=1 }
  END { if (!x) print "TIMEOUT" }'


Because, not everyone is as stunningly brilliant as you?

To a non-zero population of this list the above looks like line-noise...

Could be worse, could be perl.  In any case, filtering the existing
output does seem better than adding every imaginable formatting option
to dig.

... I *could* maybe see adding a formatting option to produce an
easier-to-parse output header, though, such as:

   ; OPCODE=QUERY
   ; RCODE=NOERROR
   ; QRFLAG=1
   ; AAFLAG=0
   ; TCFLAG=0
   ; RDFLAG=1
   ; RAFLAG=1
   ; ADFLAG=0
   ; CDFLAG=0
   [... etc ...]

While on some level, I'm with you, "IP only" doesn't seem like a corner case.
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Re: Digging to the final IP

[Dave Knight]

On Oct 19, 2014, at 1:26, Frank Bulk  wrote:

> Is there a dig option that will list out the final (IPs) or query result??
> By default, even with +short, it can list intermediate CNAME(s) and not what
> IP(s) that CNAME may have.  
> 
> For example, 
>   root@nagios:/tmp# dig mail.automatedwastesystems.net +short
>   mail3.sandhills.com.
>   root@nagios:/tmp#
> 
> I'd rather know that mail3.sandhills.com is NXDOMAIN.
> 
> Regards,
> 
> Frank


How about… 

$ dig +noall +answer mail.automatedwastesystems.net in a | egrep 'IN\tA\t' | 
cut -f6

which correctly returns nothing in this case, but when there’s a CNAME chain 
ending in addresses it returns them

$ dig +noall +answer dave.knig.ht in a | egrep 'IN\tA\t' | cut -f6
216.235.14.46

and surely you want IPv6 support…

$ dig +noall +answer dave.knig.ht in a dave.knig.ht in  | egrep 
'IN\t(A|)\t' | cut -f6
216.235.14.46
2001:4900:1:393::2

dave


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RE: Digging to the final IP

[Darcy Kevin (FCA)]

We have people on this list who are incapable of programming simple text 
extraction in *at*least*one*language*? Really?

No-one said a _scripting_ language had to be used. Feel free to use C (with 
"sharp" or "plusplus", if you wish), or Pascal, or Smalltalk, or LISP, or 
Fortran, or S/370 Assembler. Whatever floats your boat. Whatever doesn't look 
like "line-noise" to you, nor has a requirement of "stunning brilliance" to 
use. Feel free to format it in pretty ways (if the language allows you to do 
that) and/or comment it liberally.

(Personally, I'd probably use Perl with the Net::DNS module, but that's only 
because I've written about a million of those scripts and so wouldn't have to 
think too hard about it).


- Kevin

-Original Message-
From: bind-users-boun...@lists.isc.org 
[mailto:bind-users-boun...@lists.isc.org] On Behalf Of Warren Kumari
Sent: Tuesday, October 21, 2014 3:07 PM
To: Mark Andrews
Cc: bind-us...@isc.org
Subject: Re: Digging to the final IP

On Mon, Oct 20, 2014 at 1:19 PM, Mark Andrews  wrote:
>
> Why do we need to have a option to dig to massage the results into 
> every possible different form?
>
> dig A $name | awk '$0 ~ /status/ && $0 !~ /status: NOERROR,/ {
> sub(",", "", $6 ); print $6; x=1
>}
>$4 == "A" { print $5; x=1 }
>END { if (!x) print "TIMEOUT" }'


Because, not everyone is as stunningly brilliant as you?

To a non-zero population of this list the above looks like line-noise...

W

>
> Mark
>
>
> In message <54451077.8030...@imperial.ac.uk>, Phil Mayers writes:
>> On 20/10/14 14:22, Frank Bulk (iname.com) wrote:
>> > We=92re using this in a bash shell script.  I don=92t think 
>> > there=92s a n=
>> ative
>> > shell command to get the IP, so I=92ll use a mixture of host and 
>> > dig as necessary.
>>
>> If your system has it, try "getent" e.g.
>>
>> getent ahosts hostname
>> ___
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first place.
This is like putting rabid weasels in your pants, and later expressing regret 
at having chosen those particular rabid weasels and that pair of pants.
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Re: Digging to the final IP

[Evan Hunt]

On Tue, Oct 21, 2014 at 12:07:15PM -0700, Warren Kumari wrote:
> > dig A $name | awk '$0 ~ /status/ && $0 !~ /status: NOERROR,/ {
> > sub(",", "", $6 ); print $6; x=1
> >}
> >$4 == "A" { print $5; x=1 }
> >END { if (!x) print "TIMEOUT" }'
> 
> 
> Because, not everyone is as stunningly brilliant as you?
> 
> To a non-zero population of this list the above looks like line-noise...

Could be worse, could be perl.  In any case, filtering the existing
output does seem better than adding every imaginable formatting option
to dig.

... I *could* maybe see adding a formatting option to produce an
easier-to-parse output header, though, such as:

; OPCODE=QUERY
; RCODE=NOERROR
; QRFLAG=1
; AAFLAG=0
; TCFLAG=0
; RDFLAG=1
; RAFLAG=1
; ADFLAG=0
; CDFLAG=0
[... etc ...]

-- 
Evan Hunt -- e...@isc.org
Internet Systems Consortium, Inc.
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Re: Digging to the final IP

[Warren Kumari]

On Mon, Oct 20, 2014 at 1:19 PM, Mark Andrews  wrote:
>
> Why do we need to have a option to dig to massage the results into
> every possible different form?
>
> dig A $name | awk '$0 ~ /status/ && $0 !~ /status: NOERROR,/ {
> sub(",", "", $6 ); print $6; x=1
>}
>$4 == "A" { print $5; x=1 }
>END { if (!x) print "TIMEOUT" }'


Because, not everyone is as stunningly brilliant as you?

To a non-zero population of this list the above looks like line-noise...

W

>
> Mark
>
>
> In message <54451077.8030...@imperial.ac.uk>, Phil Mayers writes:
>> On 20/10/14 14:22, Frank Bulk (iname.com) wrote:
>> > We=92re using this in a bash shell script.  I don=92t think there=92s a n=
>> ative
>> > shell command to get the IP, so I=92ll use a mixture of host and dig as
>> > necessary.
>>
>> If your system has it, try "getent" e.g.
>>
>> getent ahosts hostname
>> ___
>> Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscri=
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> --
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org
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-- 
I don't think the execution is relevant when it was obviously a bad
idea in the first place.
This is like putting rabid weasels in your pants, and later expressing
regret at having chosen those particular rabid weasels and that pair
of pants.
   ---maf
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RE: Digging to the final IP

[Frank Bulk]

That feature runs on our system, but it doesn't digging through to a final
IP or failure:
getent ahosts mail.automatedwastesystems.net
returns nothing.

Regards,

Frank

-Original Message-
From: bind-users-boun...@lists.isc.org
[mailto:bind-users-boun...@lists.isc.org] On Behalf Of Phil Mayers
Sent: Monday, October 20, 2014 8:39 AM
To: bind-users@lists.isc.org
Subject: Re: Digging to the final IP

On 20/10/14 14:22, Frank Bulk (iname.com) wrote:
> We're using this in a bash shell script.  I don't think there's a native
> shell command to get the IP, so I'll use a mixture of host and dig as
> necessary.

If your system has it, try "getent" e.g.

getent ahosts hostname
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Re: Digging to the final IP

[Mark Andrews]

Why do we need to have a option to dig to massage the results into
every possible different form?  

dig A $name | awk '$0 ~ /status/ && $0 !~ /status: NOERROR,/ {
sub(",", "", $6 ); print $6; x=1
   }
   $4 == "A" { print $5; x=1 }
   END { if (!x) print "TIMEOUT" }'

Mark


In message <54451077.8030...@imperial.ac.uk>, Phil Mayers writes:
> On 20/10/14 14:22, Frank Bulk (iname.com) wrote:
> > We=92re using this in a bash shell script.  I don=92t think there=92s a n=
> ative
> > shell command to get the IP, so I=92ll use a mixture of host and dig as
> > necessary.
> 
> If your system has it, try "getent" e.g.
> 
> getent ahosts hostname
> ___
> Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscri=
> be from this list
> 
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> bind-users@lists.isc.org
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org
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Re: Digging to the final IP

[Phil Mayers]

On 20/10/14 14:22, Frank Bulk (iname.com) wrote:

We’re using this in a bash shell script.  I don’t think there’s a native
shell command to get the IP, so I’ll use a mixture of host and dig as
necessary.


If your system has it, try "getent" e.g.

getent ahosts hostname
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RE: Digging to the final IP

[Frank Bulk (iname.com)]

We’re using this in a bash shell script.  I don’t think there’s a native shell 
command to get the IP, so I’ll use a mixture of host and dig as necessary.

 

Thanks,

 

Frank

 

From: Fajar A. Nugraha [mailto:w...@fajar.net] 
Sent: Sunday, October 19, 2014 11:04 PM
To: Frank Bulk
Cc: comp-protocols-dns-b...@isc.org
Subject: Re: Digging to the final IP

 

What are you using this for?

 

If it's part of a script, it might be easier to just use gethostbyname. For 
example, in php: http://php.net/manual/en/function.gethostbyname.php , Returns 
the IPv4 address or a string containing the unmodified hostname on failure.

 

-- 

Fajar

 

 

On Mon, Oct 20, 2014 at 10:43 AM, Frank Bulk mailto:frnk...@iname.com> > wrote:

Thanks, what I ended up using.

Didn't think that there was anything host could do that dig couldn't do.

Frank


-Original Message-
From: bind-users-boun...@lists.isc.org 
<mailto:bind-users-boun...@lists.isc.org> 
[mailto:bind-users-boun...@lists.isc.org 
<mailto:bind-users-boun...@lists.isc.org> ] On Behalf Of Barry Margolin
Sent: Sunday, October 19, 2014 5:00 AM
To: comp-protocols-dns-b...@isc.org <mailto:comp-protocols-dns-b...@isc.org> 
Subject: Re: Digging to the final IP

In article mailto:mailman.1097.1413711142.26362.bind-us...@lists.isc.org> >,
 Sten Carlsen mailto:st...@s-carlsen.dk> > wrote:

> Would "host" be closer to what you want?

Host also tells you about aliases it encounters along the way.

>
>
> --
> Best regards
>
> Sten Carlsen
>
> No improvements come from shouting:
>
>   "MALE BOVINE MANURE!!!"
>
> > On 19 Oct 2014, at 08:05, Karl Auer  > <mailto:ka...@biplane.com.au> > wrote:
> >
> >> On Sun, 2014-10-19 at 00:26 -0500, Frank Bulk wrote:
> >> Is there a dig option that will list out the final (IPs) or query
result??
> >> By default, even with +short, it can list intermediate CNAME(s) and not

> >> what
> >> IP(s) that CNAME may have.
> >
> > Not great, but might be enough to be helpful:
> >
> >   dig +nonssearch $1 | egrep -i "STATUS|^$1"
> >
> > Regards, K.
> >
> > --
> > ~~~
> > Karl Auer (ka...@biplane.com.au <mailto:ka...@biplane.com.au> )
> > http://www.biplane.com.au/kauer
> > http://twitter.com/kauer389
> >
> > GPG fingerprint: EC67 61E2 C2F6 EB55 884B E129 072B 0AF0 72AA 9882
> > Old fingerprint: B862 FB15 FE96 4961 BC62 1A40 6239 1208 9865 5F9A
> >
> >
> > ___
> > Please visit https://lists.isc.org/mailman/listinfo/bind-users to
> > unsubscribe from this list
> >
> > bind-users mailing list
> > bind-users@lists.isc.org <mailto:bind-users@lists.isc.org> 
> > https://lists.isc.org/mailman/listinfo/bind-users

--
Barry Margolin
Arlington, MA
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Re: Digging to the final IP

[Josh Kuo]

If all you are after is one of the final IP addresses (not the entire 
set), then using a "dumb" client might be easier. For instance, 'ping'.


$ ping -q -c1 www.google.com
PING www.google.com (203.66.155.113): 56 data bytes


If you want to get more than one IP address, then you'll need an 
intelligent client such as 'host' or 'dig:


$ host www.google.com
www.google.com has address 203.66.155.49
www.google.com has address 203.66.155.50
www.google.com has address 203.66.155.44
...
www.google.com has address 203.66.155.45
www.google.com has IPv6 address 2404:6800:4008:c03::67



On 10/20/14, 12:03 PM, Fajar A. Nugraha wrote:

What are you using this for?

If it's part of a script, it might be easier to just use gethostbyname. For
example, in php: http://php.net/manual/en/function.gethostbyname.php ,
Returns the IPv4 address or a string containing the unmodified hostname on
failure.



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Re: Digging to the final IP

[Fajar A. Nugraha]

What are you using this for?

If it's part of a script, it might be easier to just use gethostbyname. For
example, in php: http://php.net/manual/en/function.gethostbyname.php ,
Returns the IPv4 address or a string containing the unmodified hostname on
failure.

-- 
Fajar


On Mon, Oct 20, 2014 at 10:43 AM, Frank Bulk  wrote:

> Thanks, what I ended up using.
>
> Didn't think that there was anything host could do that dig couldn't do.
>
> Frank
>
> -Original Message-
> From: bind-users-boun...@lists.isc.org
> [mailto:bind-users-boun...@lists.isc.org] On Behalf Of Barry Margolin
> Sent: Sunday, October 19, 2014 5:00 AM
> To: comp-protocols-dns-b...@isc.org
> Subject: Re: Digging to the final IP
>
> In article ,
>  Sten Carlsen  wrote:
>
> > Would "host" be closer to what you want?
>
> Host also tells you about aliases it encounters along the way.
>
> >
> >
> > --
> > Best regards
> >
> > Sten Carlsen
> >
> > No improvements come from shouting:
> >
> >   "MALE BOVINE MANURE!!!"
> >
> > > On 19 Oct 2014, at 08:05, Karl Auer  wrote:
> > >
> > >> On Sun, 2014-10-19 at 00:26 -0500, Frank Bulk wrote:
> > >> Is there a dig option that will list out the final (IPs) or query
> result??
> > >> By default, even with +short, it can list intermediate CNAME(s) and
> not
>
> > >> what
> > >> IP(s) that CNAME may have.
> > >
> > > Not great, but might be enough to be helpful:
> > >
> > >   dig +nonssearch $1 | egrep -i "STATUS|^$1"
> > >
> > > Regards, K.
> > >
> > > --
> > > ~~~
> > > Karl Auer (ka...@biplane.com.au)
> > > http://www.biplane.com.au/kauer
> > > http://twitter.com/kauer389
> > >
> > > GPG fingerprint: EC67 61E2 C2F6 EB55 884B E129 072B 0AF0 72AA 9882
> > > Old fingerprint: B862 FB15 FE96 4961 BC62 1A40 6239 1208 9865 5F9A
> > >
> > >
> > > ___
> > > Please visit https://lists.isc.org/mailman/listinfo/bind-users to
> > > unsubscribe from this list
> > >
> > > bind-users mailing list
> > > bind-users@lists.isc.org
> > > https://lists.isc.org/mailman/listinfo/bind-users
>
> --
> Barry Margolin
> Arlington, MA
> ___
> Please visit https://lists.isc.org/mailman/listinfo/bind-users to
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RE: Digging to the final IP

[Frank Bulk]

Thanks, what I ended up using.

Didn't think that there was anything host could do that dig couldn't do.

Frank

-Original Message-
From: bind-users-boun...@lists.isc.org
[mailto:bind-users-boun...@lists.isc.org] On Behalf Of Barry Margolin
Sent: Sunday, October 19, 2014 5:00 AM
To: comp-protocols-dns-b...@isc.org
Subject: Re: Digging to the final IP

In article ,
 Sten Carlsen  wrote:

> Would "host" be closer to what you want?

Host also tells you about aliases it encounters along the way.

> 
> 
> -- 
> Best regards
> 
> Sten Carlsen
> 
> No improvements come from shouting:
> 
>   "MALE BOVINE MANURE!!!"
> 
> > On 19 Oct 2014, at 08:05, Karl Auer  wrote:
> > 
> >> On Sun, 2014-10-19 at 00:26 -0500, Frank Bulk wrote:
> >> Is there a dig option that will list out the final (IPs) or query
result??
> >> By default, even with +short, it can list intermediate CNAME(s) and not

> >> what
> >> IP(s) that CNAME may have.
> > 
> > Not great, but might be enough to be helpful:
> > 
> >   dig +nonssearch $1 | egrep -i "STATUS|^$1"
> > 
> > Regards, K.
> > 
> > -- 
> > ~~~
> > Karl Auer (ka...@biplane.com.au)
> > http://www.biplane.com.au/kauer
> > http://twitter.com/kauer389
> > 
> > GPG fingerprint: EC67 61E2 C2F6 EB55 884B E129 072B 0AF0 72AA 9882
> > Old fingerprint: B862 FB15 FE96 4961 BC62 1A40 6239 1208 9865 5F9A
> > 
> > 
> > ___
> > Please visit https://lists.isc.org/mailman/listinfo/bind-users to 
> > unsubscribe from this list
> > 
> > bind-users mailing list
> > bind-users@lists.isc.org
> > https://lists.isc.org/mailman/listinfo/bind-users

-- 
Barry Margolin
Arlington, MA
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Re: Digging to the final IP

[Barry Margolin]

In article ,
 Sten Carlsen  wrote:

> Would "host" be closer to what you want?

Host also tells you about aliases it encounters along the way.

> 
> 
> -- 
> Best regards
> 
> Sten Carlsen
> 
> No improvements come from shouting:
> 
>   "MALE BOVINE MANURE!!!"
> 
> > On 19 Oct 2014, at 08:05, Karl Auer  wrote:
> > 
> >> On Sun, 2014-10-19 at 00:26 -0500, Frank Bulk wrote:
> >> Is there a dig option that will list out the final (IPs) or query result??
> >> By default, even with +short, it can list intermediate CNAME(s) and not 
> >> what
> >> IP(s) that CNAME may have.
> > 
> > Not great, but might be enough to be helpful:
> > 
> >   dig +nonssearch $1 | egrep -i "STATUS|^$1"
> > 
> > Regards, K.
> > 
> > -- 
> > ~~~
> > Karl Auer (ka...@biplane.com.au)
> > http://www.biplane.com.au/kauer
> > http://twitter.com/kauer389
> > 
> > GPG fingerprint: EC67 61E2 C2F6 EB55 884B E129 072B 0AF0 72AA 9882
> > Old fingerprint: B862 FB15 FE96 4961 BC62 1A40 6239 1208 9865 5F9A
> > 
> > 
> > ___
> > Please visit https://lists.isc.org/mailman/listinfo/bind-users to 
> > unsubscribe from this list
> > 
> > bind-users mailing list
> > bind-users@lists.isc.org
> > https://lists.isc.org/mailman/listinfo/bind-users

-- 
Barry Margolin
Arlington, MA
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Re: Digging to the final IP

[Sten Carlsen]

Would "host" be closer to what you want?


-- 
Best regards

Sten Carlsen

No improvements come from shouting:

  "MALE BOVINE MANURE!!!"

> On 19 Oct 2014, at 08:05, Karl Auer  wrote:
> 
>> On Sun, 2014-10-19 at 00:26 -0500, Frank Bulk wrote:
>> Is there a dig option that will list out the final (IPs) or query result??
>> By default, even with +short, it can list intermediate CNAME(s) and not what
>> IP(s) that CNAME may have.
> 
> Not great, but might be enough to be helpful:
> 
>   dig +nonssearch $1 | egrep -i "STATUS|^$1"
> 
> Regards, K.
> 
> -- 
> ~~~
> Karl Auer (ka...@biplane.com.au)
> http://www.biplane.com.au/kauer
> http://twitter.com/kauer389
> 
> GPG fingerprint: EC67 61E2 C2F6 EB55 884B E129 072B 0AF0 72AA 9882
> Old fingerprint: B862 FB15 FE96 4961 BC62 1A40 6239 1208 9865 5F9A
> 
> 
> ___
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Re: Digging to the final IP

[Karl Auer]

On Sun, 2014-10-19 at 00:26 -0500, Frank Bulk wrote:
> Is there a dig option that will list out the final (IPs) or query result??
> By default, even with +short, it can list intermediate CNAME(s) and not what
> IP(s) that CNAME may have. 

Not great, but might be enough to be helpful:

   dig +nonssearch $1 | egrep -i "STATUS|^$1"

Regards, K.

-- 
~~~
Karl Auer (ka...@biplane.com.au)
http://www.biplane.com.au/kauer
http://twitter.com/kauer389

GPG fingerprint: EC67 61E2 C2F6 EB55 884B E129 072B 0AF0 72AA 9882
Old fingerprint: B862 FB15 FE96 4961 BC62 1A40 6239 1208 9865 5F9A


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Digging to the final IP

[Frank Bulk]

Is there a dig option that will list out the final (IPs) or query result??
By default, even with +short, it can list intermediate CNAME(s) and not what
IP(s) that CNAME may have.  

For example, 
root@nagios:/tmp# dig mail.automatedwastesystems.net +short
mail3.sandhills.com.
root@nagios:/tmp#

I'd rather know that mail3.sandhills.com is NXDOMAIN.

Regards,

Frank



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