linux – 如何在shell脚本中获取公共IP地址？

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

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？

解决方法

不要让它变得比它需要的更难……使用时间短

[mpenning@Bucksnort ~]$dig +short mike.homeunix.com
76.21.48.169
[mpenning@Bucksnort ~]$