Linux command (PNS): Dig command-domain search tool

Dig command

Function description

Dig and Nslookup, as well as the Domain name Query tool, is used to test the domain Name system is working properly. These two commands are all under the Bind-utils package, dig use is more convenient than Nslookup. Use the following:

dig [parameters] [options]

Common parameters

Options	Description
@server	If you do not want to use/etc/resolv.conf as the DNS host, you can fill in the other IP
-T (Type)	Specify query type
-X	Reverse Query
+short	Provide a short reply, the default is long

Example

domain name resolves to an IP address

[Email protected] ~]# dig-t A www.baidu.com ; <<>> DiG 9.9.4-redhat-9.9.4-29.el7_2.4 <<>>-T A www.baidu.com ;; Global options: +cmd ;; Got Answer: ;; ->>header<<-opcode:query, Status:noerror, id:13748 ;; Flags:qr Rd RA; Query:1, Answer:3, authority:0, additional:0 ;; QUESTION section: ; www.baidu.com. In A ;; ANSWER section: www.baidu.com. 196 in CNAME www.a.shifen.com. Www.a.shifen.com. 292 in a 220.181.112.244 Www.a.shifen.com. 292 in a 220.181.111.188 ;; Query Time:7 msec ;; server:219.141.140.10#53 (219.141.140.10) ;; When: 512 months 10:00:52 CST 2016 ;; MSG SIZE rcvd:90

query a record of JD.com

[Email protected] ~]# dig JD.com A +noall +answer

querying MX records for JD.com

[Email protected] ~]# dig JD.com MX +noall +answer

querying authoritative DNS for JD.com

[Email protected] ~]# dig JD.com NS +noall +answer

     view a short reply

[Email protected] ~]# dig JD.com +short

Learn from:

Http://www.cnblogs.com/daxian2012/archive/2013/01/10/2854126.html

This article is from the "Zhao Dongwei blog" blog, make sure to keep this source http://zhaodongwei.blog.51cto.com/4233742/1881056

Linux command (PNS): Dig command-domain search tool