Use of dpkg --get-selections and --set-selections

[John F <johnpf@atnet.net.au>]

Hi all,

We have a situaution where we want to ensure that a server has a certain 
list of packages installed. It can have extra packages, but it _must_ 
have the list we specify on it.

Can I use dpkg -get-selections > a.file and then edit it to only include 
the install and deinstall lines for the critical packages on machine 
number 1, then on the other machine run dpkg --set-selections < a.file ? 
Or does the input to --set-selections have to be a complete list of all 
packages that should be on the machine?

I can't try this out in case I blow away the machine we need to 
duplicate off - the other machine we have to duplicate to is a long way 
away and hasnt been built yet...

Thanks,

John P Foster
http://www.golden-orb.com/

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