Date: Wed, 6 Jun 2012 09:17:47 -0400 From: Robert Huff <roberthuff@rcn.com> To: Matthias Apitz <guru@unixarea.de> Cc: freebsd-questions@freebsd.org Subject: Re: IP -> e-mail Message-ID: <20431.22651.888125.876852@jerusalem.litteratus.org> In-Reply-To: <20120606125125.GA2043@tiny> References: <1338973608.78319.YahooMailNeo@web162906.mail.bf1.yahoo.com> <20120606125125.GA2043@tiny>
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Matthias Apitz writes:
> > Let say my computer is connected to the internet with a cable
> modem and has a dynamic IP address via DHCP. This address is
> refreshed after every random days.
>
> > I want to know the new address even when I'm not home. Like
> send an e-mail with the new IP, I already know how to do this,
> but how can I track the event when my computer receives the new
> IP?
>
> Run this in a cronjob:
>
> lynx -dump myip.nl | fgrep 'WAN IP'
>
> strore the result in a file and when it changes, trigger a mail;
Or, using only tools in the base system:
ifconfig | head | grep "inet " | awk '{print $2}'
Robert Huff
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