10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Experts - I was hoping someone could help me out with the logic on this perl script.
I'm trying to run some dig commands and parse in such a way as to group them together.
Here's what I have so far.
#!/usr/bin/perl
system(clear);
my @host = qw/yahoo.com
google.com
/;
foreach... (2 Replies)
Discussion started by: timj123
2 Replies
2. Shell Programming and Scripting
Hi,
I am testing some code to match a grep to see if one of the dns server exists but it does not seem to match:
ERROR:
=======
CRITICAL: google.com DNS : ns3.google.com NOT found
CODE:
=====
if ; then
echo "OK: google.com DNS : ns3.google.com exists"
else
echo... (5 Replies)
Discussion started by: dmccabe
5 Replies
3. What is on Your Mind?
Hi.
Having a bit of quick fun putting some networking tools online.
Here is a DNS Lookup tool.
It's basically the DIG command line tool wrapped in forum formatting.
If you want more features, please post here.
I'm doing to make a few more network tools like this and move on to other... (1 Reply)
Discussion started by: Neo
1 Replies
4. UNIX for Advanced & Expert Users
Hi,
I have these entries in the /etc/esolv.conf:
------------
domain xxxxxx
search yyyyyy
nameserver 127.0.0.1
nameserver aaaaaaaaaaaaaaaa
nameserver bbbbbbbbbbbbbbbb
-------------
When I use 'dig' or 'nslookup' command, like 'dig yahoo.com' it uses the localhost as the server.
I... (2 Replies)
Discussion started by: chaandana
2 Replies
5. IP Networking
Can I use two different DNS servers in the one command in the form of primary and secondary.
Take this for example:
dig @<primaryAddress> @<secondaryAddress> MX domain.tld
So if primary address is down, it will use the secondary address as a backup. It seems to work when testing, but thought... (1 Reply)
Discussion started by: neil_is_ere
1 Replies
6. UNIX for Dummies Questions & Answers
Hi Guys,
I just need a confirmation if what think i know is right .
dig yahoo.com
; <<>> DiG 9.7.0-P1 <<>> yahoo.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 27410
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 0
... (1 Reply)
Discussion started by: mtomar
1 Replies
7. UNIX for Dummies Questions & Answers
all,
i am newbie to dns bind . Any help is very appreciated.
I am using dig command to view the records in the config. I am expecting the following comamnds to display all the A (Address records) in the zone data file.
my zone data file looks like this
-------------------
$ORIGIN .
$TTL... (2 Replies)
Discussion started by: sujathab
2 Replies
8. UNIX for Dummies Questions & Answers
When I use the linux dig command such as #dig yahoo.com it resolves
but when I use the same command as root it gives me error "Segmentation Fault"
Please advise I am completly baffled. (1 Reply)
Discussion started by: Tirmazi
1 Replies
9. Shell Programming and Scripting
First I would like to thank you for your time in running a great Forum!
Background - Windows/ASP/VB COM/SQL Server programmer/Webmaster.
Desire - To build similar skillset on UNIX. I am looking at learning Perl or Python (maybe Jython due to connection to Java). I have a brief background... (3 Replies)
Discussion started by: nimrod
3 Replies
10. UNIX for Dummies Questions & Answers
Hi all, I'm running BIND 9.1.3 and the accompanying `dig and nslookup' on a vanilla Redhat 7.2 Linux box.
I've produced all of my Zone data and config files (I used h2n with some manual tweaks to do this, as some >= v8.2 BIND features aren't properly supported as far as I can see).
Im my... (6 Replies)
Discussion started by: sam_pointer
6 Replies
NSLOOKUP(1) BIND9 NSLOOKUP(1)
NAME
nslookup - query Internet name servers interactively
SYNOPSIS
nslookup [-option] [name | -] [server]
DESCRIPTION
Nslookup is a program to query Internet domain name servers. Nslookup has two modes: interactive and non-interactive. Interactive mode
allows the user to query name servers for information about various hosts and domains or to print a list of hosts in a domain.
Non-interactive mode is used to print just the name and requested information for a host or domain.
ARGUMENTS
Interactive mode is entered in the following cases:
1. when no arguments are given (the default name server will be used)
2. when the first argument is a hyphen (-) and the second argument is the host name or Internet address of a name server.
Non-interactive mode is used when the name or Internet address of the host to be looked up is given as the first argument. The optional
second argument specifies the host name or address of a name server.
Options can also be specified on the command line if they precede the arguments and are prefixed with a hyphen. For example, to change the
default query type to host information, and the initial timeout to 10 seconds, type:
nslookup -query=hinfo -timeout=10
The -version option causes nslookup to print the version number and immediately exits.
INTERACTIVE COMMANDS
host [server]
Look up information for host using the current default server or using server, if specified. If host is an Internet address and the
query type is A or PTR, the name of the host is returned. If host is a name and does not have a trailing period, the search list is
used to qualify the name.
To look up a host not in the current domain, append a period to the name.
server domain
lserver domain
Change the default server to domain; lserver uses the initial server to look up information about domain, while server uses the current
default server. If an authoritative answer can't be found, the names of servers that might have the answer are returned.
root
not implemented
finger
not implemented
ls
not implemented
view
not implemented
help
not implemented
?
not implemented
exit
Exits the program.
set keyword[=value]
This command is used to change state information that affects the lookups. Valid keywords are:
all
Prints the current values of the frequently used options to set. Information about the current default server and host is also
printed.
class=value
Change the query class to one of:
IN
the Internet class
CH
the Chaos class
HS
the Hesiod class
ANY
wildcard
The class specifies the protocol group of the information.
(Default = IN; abbreviation = cl)
[no]debug
Turn on or off the display of the full response packet and any intermediate response packets when searching.
(Default = nodebug; abbreviation = [no]deb)
[no]d2
Turn debugging mode on or off. This displays more about what nslookup is doing.
(Default = nod2)
domain=name
Sets the search list to name.
[no]search
If the lookup request contains at least one period but doesn't end with a trailing period, append the domain names in the domain
search list to the request until an answer is received.
(Default = search)
port=value
Change the default TCP/UDP name server port to value.
(Default = 53; abbreviation = po)
querytype=value
type=value
Change the type of the information query.
(Default = A; abbreviations = q, ty)
[no]recurse
Tell the name server to query other servers if it does not have the information.
(Default = recurse; abbreviation = [no]rec)
ndots=number
Set the number of dots (label separators) in a domain that will disable searching. Absolute names always stop searching.
retry=number
Set the number of retries to number.
timeout=number
Change the initial timeout interval for waiting for a reply to number seconds.
[no]vc
Always use a virtual circuit when sending requests to the server.
(Default = novc)
[no]fail
Try the next nameserver if a nameserver responds with SERVFAIL or a referral (nofail) or terminate query (fail) on such a response.
(Default = nofail)
RETURN VALUES
nslookup returns with an exit status of 1 if any query failed, and 0 otherwise.
FILES
/etc/resolv.conf
SEE ALSO
dig(1), host(1), named(8).
AUTHOR
Internet Systems Consortium, Inc.
COPYRIGHT
Copyright (C) 2004-2007, 2010, 2013-2017 Internet Systems Consortium, Inc. ("ISC")
ISC
2014-01-24 NSLOOKUP(1)