(Q) Running a program if and only if connected

[Tom Marshall]

And divine.

On Sun, Sep 22, 2002 at 08:07:31PM +1000, Tomasz Ciolek wrote:
>  have a look at package called whereami. 
> 
>  It can be used to run all manner of programs when the network
>  environment chnages to a new one... 
> 
>  ;)
> 
> 
> On Sun, Sep 22, 2002 at 11:57:15AM +0200, Michael Renzmann wrote:
> > Hi.
> > 
> > Timothy Murphy wrote:
> > >I want to run a program on my laptop when I switch on
> > >if and only if it is connected to my desktop.
> > >What is the best way to do this?
> > 
> > If your desktop has a static IP address, try the following:
> > 
> > ping -c <desktop-ip> > /dev/null && echo "i'm connected to the desktop" 
> > || echo "desktop is not there"
> > 
> > Only drawback: if the ip is not reachable the above command delays for 
> > about 5 seconds.
> > 
> > If pinging the ip is not "secure" enough (i.e. if you are sometimes 
> > connected to networks where another computer than your desktop has the 
> > same ip as your desktop) you could try to work with an arpping on the 
> > mac address of your desktop's network interface. arpping is part of the 
> > iproute2-package.
> > 
> > Bye, Mike
> 
> -- 
> Tomasz M. Ciolek	*
> 			* 	Everything falls under the law of change;	
> <tmc at dreamcraft.com.au>	*	  Like a dream, a phantom, a bubble, a shadow,
> <tmc at goldweb.com.au>	*	  like dew of flash of lightning.
> 			*	  You should contemplate like this. 
> *******************************************************************************
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