java中的接口是类吗
299
2022-09-12
dig常用命令解释(linux中dig命令)
@<服务器地址>:指定进行域名解析的域名服务器;例:dig @1.2.4.8 baidu.com
-b
实例:C:\Users\FFHK>dig @1.2.4.8 baidu.com
; <<>> DiG 9.15.3 <<>> @1.2.4.8 baidu.com; (1 server found);; global options: +cmd;; Got answer:;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 19403;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 5, ADDITIONAL: 6
;; OPT PSEUDOSECTION:; EDNS: version: 0, flags:; udp: 4096;; QUESTION SECTION:;baidu.com. IN A
;; ANSWER SECTION:baidu.com. 229 IN CNAME a.shifen.com.a.shifen.com. 216 IN A 61.135.169.125a.shifen.com. 216 IN A 61.135.169.121
;; AUTHORITY SECTION:a.shifen.com. 101 IN NS ns1.a.shifen.com.a.shifen.com. 101 IN NS ns2.a.shifen.com.a.shifen.com. 101 IN NS ns3.a.shifen.com.a.shifen.com. 101 IN NS ns4.a.shifen.com.a.shifen.com. 101 IN NS ns5.a.shifen.com.
;; ADDITIONAL SECTION:ns1.a.shifen.com. 262 IN A 61.135.165.224ns2.a.shifen.com. 200 IN A 220.181.33.32ns3.a.shifen.com. 36 IN A 112.80.255.253ns4.a.shifen.com. 516 IN A 14.215.177.229ns5.a.shifen.com. 36 IN A 180.76.76.95
;; Query time: 27 msec;; SERVER: 1.2.4.8#53(1.2.4.8);; WHEN: Wed Sep 04 20:12:48 中国标准时间 2019;; MSG SIZE rcvd: 271
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