howto use curl to get Internet IP

max maximilianbianco at gmail.com
Fri Jun 6 22:02:54 UTC 2008


Jim wrote:
> Dave Burns wrote:
>> On Fri, Jun 6, 2008 at 7:48 AM, Jim <mickeyboa at sbcglobal.net> wrote:
>>  
>>> I want to use  curl to get my Internet IP address, and getting it to
>>> ddclirent.
>>> Using  getip.com and dyndns.org to get my IP for ddclient, isn't working
>>> out, they shutout  ddclient  after  awhile from getting my Internet 
>>> IP  to
>>> send to dyndns.org .
>>> I understand curl can get the Internet IP for ddclient, does anyone 
>>> know of
>>> a  HowTo to show me how to do this ?
>>>
>>>       
>>
>> 1) if you insist on this approach, here's a hint:curl -o - 
>> http://getip.com/ 2>/dev/null|grep 128
>> Replace 128 with some part of your IP number that you're confident
>> will not change. In the example, I used the left 3 digits of my IP
>> number. Use sed or awk to scrape off the crud that wget will spew out
>> along with the IP number.
>>
>> 2) why not just use /sbin/ifconfig -a? Your machine knows its own IP
>> number as well or better than getip.com.
>>
>> 3) why not man curl? That is, read the man page of the command you are
>> asking about. You don't sound like you've even tried to do your
>> homework.
>>
>> Dave
>>
>>   
> What approach would you suggest that is better to use ?
> I have a DSL AP 2Wire783 in front of my  computer that does not have the 
> capability of giving me the Internet IP.
> 
> 
You sure about that? I'll admit I have only used about 4 or 5 different 
dsl modems but all of them could be put in bridging mode.

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