[Novalug] DD Command

[jecottrell3 at comcast.net]

I am totally aghast that NOBODY has mentioned tee(1).

Actually, I'm rather offended.

dd if=/some/path | tee file1 file2 > file3

Before you look at exotic solutions, LEARN THE BASICS FIRST.

Y'all have NO BUSINESS playing with RAIDs and such without a firm grasp on the FUNDAMENTALS.

Now for everyone who missed that do the following:

for dir in /sbin /usr/sbin /bin /usr/bin
do
    cd $x;
    man ??
    man ???
    man ????
done

That should get you the man pages of every 2, 3, and 4 letter command, most of which are 30 years old.

For extra credit add man ?????

JIM

----- Original Message -----
From: "Greg F" <gregfaust at gmail.com>
To: novalug at calypso.tux.org
Sent: Tuesday, June 16, 2009 7:59:25 AM GMT -05:00 US/Canada Eastern
Subject: [Novalug] DD Command



Does anyone know of a way to copy a single DD input file (disk) to multiple output files (disks) simultaneously? 

I'm trying to avoid the read bottleneck by reading once and piping that to all of the writes. I have a bunch of laptops from a training lab and this will save me a huge amount of time if it can be done. I'm familiar with DD, netcat and SSH, but I only know how to pipe a single input file to a single output file. 
Thanks, 
Greg 
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