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)
Hi All,
Can please let me know what is the difference between the single line mode and multi line mode in regular expresions?
Thanks,
Chidhambaram B (3 Replies)
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)
I am relatively new to this forum and Unix scripting.
ksh script:
part 1 :will call a PL\SQL program will create 3 CSV file at the unix directory.
part 2 : will sftp the files to the EFT server.
Once the EFT server receives these file , it will transfer them to a shared windows folders.
... (3 Replies)
Dear All,
I want to get all the IPs of the A RECORDS for mail.google.com.
The aim is to deny access to these IPs.
I learnt that mail.google.com has several IPs.
I did the following steps:
1. whois google.com
2. I got the following as its DOMAIN SERVERS:
3.# dig @ns1.google.com a... (1 Reply)
Hey everyone,
Okay, so I've been having some fun with the dig command, and wanted to dig my old school. Two questions came up from this. So I:
dig @8.8.8.8 +recurse njcu.edu ANY
and the result is about 8 records, including the SOA record. One of them is this weird TXT record, and the other is... (1 Reply)
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)
Hi there, I'm currently working on an exercise to connect to a Windows iscsi target via a Red Hat initiator machine. I'm using Windows Server 2012 and Red Hat Enterprise Linux v7.1
I have created the target on the Windows Server box and the two devices can communicate with each other. Verified... (3 Replies)
Discussion started by: Tech87
3 Replies
LEARN ABOUT PHP
checkdnsrr
CHECKDNSRR(3) 1 CHECKDNSRR(3)checkdnsrr - Check DNS records corresponding to a given Internet host name or IP addressSYNOPSIS
bool checkdnsrr (string $host, [string $type = "MX"])
DESCRIPTION
Searches DNS for records of type $type corresponding to $host.
PARAMETERS
o $host
-$host may either be the IP address in dotted-quad notation or the host name.
o $type
-$type may be any one of: A, MX, NS, SOA, PTR, CNAME, AAAA, A6, SRV, NAPTR, TXT or ANY.
RETURN VALUES
Returns TRUE if any records are found; returns FALSE if no records were found or if an error occurred.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | This function is now available on Windows plat- |
| | forms. |
| | |
| 5.2.4 | |
| | |
| | TXT $type was added. |
| | |
+--------+---------------------------------------------------+
NOTES
Note
For compatibility with Windows before this was implemented, then try the PEAR class Net_DNS.
SEE ALSO dns_get_record(3), getmxrr(3), gethostbyaddr(3), gethostbyname(3), gethostbynamel(3), the named(8) manual page.
PHP Documentation Group CHECKDNSRR(3)