Re: [Dorset] Message to Ralph: What was that command you used?

2011-01-12 Thread Ralph Corderoy 

Hi Terry,

 At the meeting last night you used a command to discover the IP
 address of your domain.  Paul just asked me what it was, but all I
 could remember was that it was a TLA something like git, (but not
 git).

It was dig(1);  domain information groper.  Here's some examples to send
onto Paul.

$ dig google.com

;  DiG 9.4.2-P2.1  google.com
;; global options:  printcmd
;; Got answer:
;; -HEADER- opcode: QUERY, status: NOERROR, id: 29412
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;google.com.IN  A

;; ANSWER SECTION:
google.com. 161 IN  A   74.125.230.80
google.com. 161 IN  A   74.125.230.82
google.com. 161 IN  A   74.125.230.84
google.com. 161 IN  A   74.125.230.81
google.com. 161 IN  A   74.125.230.83

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Jan 12 08:50:00 2011
;; MSG SIZE  rcvd: 108

$
$ dig +short google.com   # More terse.
74.125.230.83
74.125.230.80
74.125.230.82
74.125.230.84
74.125.230.81
$
$ dig +short google.com mx   # Want MX records instead of default A.
400 google.com.s9b2.psmtp.com.
100 google.com.s9a1.psmtp.com.
300 google.com.s9b1.psmtp.com.
200 google.com.s9a2.psmtp.com.
$
$ dig +short google.com soa
ns1.google.com. dns-admin.google.com. 1438691 7200 1800 1209600 300
$
$ dig +multiline google.com soa   # Explain SOA numbers.

;  DiG 9.4.2-P2.1  +multiline google.com soa
;; global options:  printcmd
;; Got answer:
;; -HEADER- opcode: QUERY, status: NOERROR, id: 58553
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;google.com.IN SOA

;; ANSWER SECTION:
google.com. 57 IN SOA ns1.google.com. dns-admin.google.com. (
1438691; serial
7200   ; refresh (2 hours)
1800   ; retry (30 minutes)
1209600; expire (2 weeks)
300; minimum (5 minutes)
)

;; Query time: 81 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Jan 12 08:50:33 2011
;; MSG SIZE  rcvd: 78

$
$ dig +short google.com ns   # Get nameservers.
ns1.google.com.
ns3.google.com.
ns2.google.com.
ns4.google.com.
$
$ dig +short @ns2.google.com google.com txt   # Send query to particular NS.
v=spf1 include:_netblocks.google.com ip4:216.73.93.70/31 
ip4:216.73.93.72/31 ~all
$

nslookup(1) predates dig but dig is more commonly used these days.

Cheers,
Ralph.


--
Next meeting:  Bournemouth, Tue or Wed 2011-02-?? 20:00
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Re: [Dorset] Message to Ralph: What was that command you used?

2011-01-12 Thread d-...@hadrian-way.co.uk 
 

On 12 January 2011 at 08:55 Ralph Corderoy ra...@inputplus.co.uk wrote:

 It was dig(1);  domain information groper.  Here's some examples to send
 onto Paul. 
Thanks Ralph.  I've passed this on.

Terry Coles
--
Next meeting:  Bournemouth, Tue or Wed 2011-02-?? 20:00
Meets, Mailing list, IRC, LinkedIn, ...  http://dorset.lug.org.uk/
How to Report Bugs Effectively:  http://goo.gl/4Xue