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Old 07-28-2007, 12:58 PM   #1
Registered: May 2006
Location: USA
Distribution: FreeBSD Ubuntu Debian
Posts: 137

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dd 2 output files simultaneously, is it possible?

I didn't see anything in the man pages that would indicate that it could, but it seems like you should be able to.

could I just say:
dd bs=512 if=/dev/sda of=/dev/sdb of=/dev/sdc

or would it be more like:
dd bs=512 if=/dev/sda of=/dev/sdb,/dev/sdc

Or is it just plain impossible?
Old 07-28-2007, 02:39 PM   #2
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Registered: Sep 2003
Posts: 3,171

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Why not just try it? Presuming you are willing to overwrite sdb and sdc then it can't really hurt anything. Worst it can do is return an error. In fact, I will bet it does just that.


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