you guys are great
  i love the internet :)

> From: Dave Ihnat <[EMAIL PROTECTED]>
> Reply-To: [EMAIL PROTECTED]
> Date: Wed, 2 Jan 2002 12:50:32 -0600
> To: [EMAIL PROTECTED]
> Subject: Re: get ip script
> 
> On Wed, Jan 02, 2002 at 10:24:43AM -0800, gabriel wrote:
>> this really should be easy...  i'm thinking of doing away with my static ip
>> since it costs so much.  but this means that i won't be able to just
>> memorise a single string of numbers when i want to ftp into my box from work
>> etc.
> 
> DNS is you friend.
> 
>> so i'm wondering:
>> could someone show me an example of a script i could use that would get the
>> ip of my machine and email it to me on a daily basis?
> 
> Well, you could do something like:
> 
> IFCONFIG="/sbin/ifconfig -i eth1"
> [EMAIL PROTECTED]
> 
> CUR_IP=`$IFCONFIG | grep "inet addr" | cut -f2 -d':' | sed -e "s/ .*//"`;
> 
> cat <<!  | mail -s "IP ADDRESS" $MAILTO
> Current IP: $CUR_IP
> !
> 
>> is there an easier way?
>> what about dynamic dns?  what is that?
> 
> Got it in one.  DNS registration allows you to associate your IP
> with a domain name.  Unfortunately, if you use DHCP this may change,
> although most providers won't do so unless your machine is shutdown or
> loses connectivity, and most won't even then.  On both DSL and cable,
> I've had the same DHCP assigned address for months on end--in fact,
> on neither DirecTV (nee Telocity) nor AT&T Cable did I ever have a
> reassignment of my IP.  Plus, I've administrative rights to my primary
> and secondary DNS servers, anyway.  Thus, I've dealt with traditional DNS,
> and written scripts that run periodically on my system to check for changes
> in IP on the network interface with respect to my DNS zone files.
> 
> Dynamic DNS simply allows your system to submit IP changes to your DNS
> server automatically on IP reassignment.  This will usually result in
> a short period of service interruption while all the cached nameservers
> expire and update your records--either you, or the dynamic DNS provider,
> want short timeouts to minimize this outage.  There are both commercial
> and free organizations offering dynamic DNS; it's typically inexpensive,
> even if you pay for it, and there are reports that service reliability
> from the free services can range from very good to questionable.
> 
> 
> Check out www.dyndns.com--hmm, I see they've stopped accepting
> new accounts until they can comfortably handle the new load--or
> www.dyndns.org, which is a different organization, despite the similarity
> of names.  Do a Google search with keywords "dynamic DNS free", if you
> want to find other free providers, or leave off the 'free' keyword if you
> don't care.
> 
> G'luck, and have fun,
> -- 
> Dave Ihnat
> [EMAIL PROTECTED]
> 
> 
> 
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