Linux basic commands --- nslookup Query domain tool

nslookup

nslookup is a tool to query the DNS domain name, it has interactive and non-interactive modes of operation.

Scope of this command: RedHat, RHEL, Ubuntu, CentOS, Fedora.

 

1 , grammar

nslookup [-option]  [name | -] [server]

 

2 , after entering the interactive mode command has the following

command	Explanation
host	The host information queries
server domain	Change server
exit	drop out
setkeyword=value	Sets the specified property All , all the attributes of print domain = name  set the query name port = value  change server port type = value  to change the type of query timeout = number  set Wait Timeout class={IN | CH | HS | ANY}

 

3 , examples

1 ) non-interactive mode queries

[root@localhost ~]# nslookup www.baidu.com Server:           172.20.10.1 Address:         172.20.10.1#53   Non-authoritative answer: www.baidu.com    canonical name = www.a.shifen.com. Name:            www.a.shifen.com Address: 111.13.100.91 Name:            www.a.shifen.com Address: 111.13.100.92

2 ) interactive mode query

[root@localhost ~]# nslookup              //交互模式 > www.baidu.com                              //输入查询的域名 Server:           172.20.10.1 Address:         172.20.10.1#53   Non-authoritative answer: www.baidu.com    canonical name = www.a.shifen.com. Name:            www.a.shifen.com Address: 111.13.100.91 Name:            www.a.shifen.com Address: 111.13.100.92 > set all                                    //打印当前所有的配置信息 Default server: 172.20.10.1 Address: 172.20.10.1#53   Set options:   novc               nodebug       nod2   search          recurse   timeout = 0     retry = 3  port = 53   querytype = A       class = IN   srchlist =  >

 

     

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