From: Joel VanderWerf <vjoel@...>
Date: 2007-05-30T03:24:03+09:00
Subject: Re: Changing variables mid-script

Fred Phillips wrote:
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> 
> Say I had a script which read:
> 
> task.start
> while $connect do
>    task.receive
> end
> task.stop
> 
> 
> 
> Could I make the variable $connect false whilst the script it running from
> an outside source, other than reading from a file?

Yes. You could use a signal handler or DRb, for example. For signals, 
put this somewhere before your while loop:

trap "USR1" do
   $connect = false
end

Then "kill -USR1 <insert-your-pid-here>" will cause $connect to become 
false.

DRb is more complicated, but exposes a much richer interface.

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407