如何在shell脚本中获取公共IP地址?

Dee*_*thy 6 linux dns shell networking dig

此命令返回我的IP地址以及其他信息.

dig @resolver1.opendns.com myip.opendns.com
; <<>> DiG 9.6-ESV-R4-P3 <<>> @resolver1.opendns.com myip.opendns.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48206
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION: 
;myip.opendns.com.      IN  A

;; ANSWER SECTION:
myip.opendns.com.   0   IN  A   122.167.119.178

;; Query time: 199 msec
;; SERVER: 208.67.222.222#53(208.67.222.222)
;; WHEN: Fri May 18 11:46:51 2012
;; MSG SIZE  rcvd: 50
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我只想从中提取我的IP地址.如何从dig输出中提取我的IP地址?

Mik*_*ton 14

不要让它变得比它需要的更难......使用 +short

[mpenning@Bucksnort ~]$ dig +short mike.homeunix.com
76.21.48.169
[mpenning@Bucksnort ~]$
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Rag*_*ram 3

如果您使用的是 bash shell,这对您有用

grep -A1 "ANSWER SECTION" ip_file.txt  | awk '{if(NF==5)print $5;}'
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注意:我的假设是您计划提取“答案部分”后打印的 IP