From: Detlef Reichl <detlef.reichl@...>
Date: 2009-05-22T06:14:15+09:00
Subject: Re: cdrom control and detection

Hi,

Mk 27 schrieb:

> David Thurston wrote:
> 
> > How do I detect that the user has inserted the next cd so that my
> > program can continue cataloging cd contents?
> 
> You could do a loop with mount, system will return true if it succeeds 
> (and false if it fails!).  However, that is not a very nice idea unless 
> you really, really want to completely minimize user interaction to 
> nothing.  I'd recommend something like:

better than polling the mount directory would be to observe it with
inotify http://raa.ruby-lang.org/project/ruby-inotify/

Because, this library includes a smal implementation error, you should
take a look at
http://www.mindbucket.com/2009/02/24/ruby-daemons-verifying-good-behavior/
and make the suggested change to the source before compile.

Cheers, detlef

-- 
http://det.cable.nu