I don't believe there is a way to change the copy number for a given media id 
(may be I am wrong). But here is a simple way I can do this

bpduplicate -PM -hoursago <hours> -id <media id> |awk '{print $5}' |while read 
bid
do
  bpduplicate -npc 2 -backupid $bid
done

I think you can use bpimmedia in place of bpduplicate to get a list of 
backupid's 

Hope this helps

Dayal
--

On Fri, 10 May 2002 09:48:32  
 laila aloui wrote:
>Hi,
>Normally to restore from a duplicate you have to
>specify the job id:
>
>/usr/openv/netbackup/bin/admincmd/bpduplicate -npc ???
>-backupid ???.
>
> is there a way to do this whithaout specifying the
>job id . in the case i want to restore all images on a
>given tape ?
>
>   thank you in advance
>
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