linux--host

host命令的功能基本与nslookup相同，命令的语法为：

host -a 宣示所查域名或者IP地址/域名和主机的相关信息

 

[lianxiang@localhost shell]$ host -a www.baidu.com
Trying "www.baidu.com"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 36006
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 2

;; QUESTION SECTION:
;www.baidu.com.                 IN      ANY

;; ANSWER SECTION:
www.baidu.com.          1196    IN      CNAME   www.a.shifen.com.

;; ADDITIONAL SECTION:
www.a.shifen.com.       414     IN      A       119.75.218.70
www.a.shifen.com.       414     IN      A       119.75.217.109

Received 90 bytes from 202.114.88.10#53 in 3632 ms
[lianxiang@localhost shell]$ host -a www.google.com
Trying "www.google.com"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45349
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 2

;; QUESTION SECTION:
;www.google.com.                        IN      ANY

;; ANSWER SECTION:
www.google.com.         1200    IN      CNAME   www-g-com-chn.l.google.com.

;; ADDITIONAL SECTION:
www-g-com-chn.l.google.com. 176 IN      A       74.125.71.99
www-g-com-chn.l.google.com. 176 IN      A       74.125.71.104

Received 94 bytes from 202.114.88.10#53 in 81 ms
[lianxiang@localhost shell]$ host -a www.yahoo.com
Trying "www.yahoo.com"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55328
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.yahoo.com.                 IN      ANY

;; ANSWER SECTION:
www.yahoo.com.          295     IN      CNAME   fp.wg1.b.yahoo.com.

Received 54 bytes from 202.114.88.10#53 in 207 ms
[lianxiang@localhost shell]$ host -a www.bing.com
Trying "www.bing.com"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44085
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.bing.com.                  IN      ANY

;; ANSWER SECTION:
www.bing.com.           3600    IN      CNAME   search.ms.com.edgesuite.net.

Received 71 bytes from 202.114.88.10#53 in 1059 ms