querying free space on a dvd-rw disk

[adler-wRvlPVLobi1/31tCrMuHxg at public.gmane.org (Stephen Adler)]

On 01/21/2011 02:34 PM, Stephen Adler wrote:
> Hi Blu'ers...
>
> I'm writing some scripts to do backups of data for my job. Does anyone
> know how to query a DVD-RW disk to find out how much free space is on
> it? I guess one could mount it, get the used space and subtract that
> from the official 4.7Gigs of DVD capacity, but it would be nice to be
> able to do some kind of direct query.
>
> Thanks in advance.
>
> Cheers. Steve.
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ok... I'm on my way...