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Re: [LUG] Listing all installed Debian packages?

 

On Wed, 01 Feb 2006 00:02:59 +0000
Simon Waters wrote:

> Grant Sewell wrote:
> > Hi all,
> > 
> > Is there a way to list all the packages installed on a system?  I've
> > tried "# dpkg --get-selections" but *everything* is listed as
> > "install" or "deinstall", even packages that have been installed
> > already are labelled as "install", so I'm guessing it's not the tool
> > I want.
> 
> It is exactly the tool you want I suspect. But if you say why you want a
> list we can probably help you even more.
> 
> The output is designed to tell you want to do one system to recreate an
> existing system, so it would say "install" for all packages installed,
> and "deinstall" for any packages missing.

So the that command-line is what I need to use to generate a "this is what needs to 
be installed on system Y for it to be the same(ish) as system X"?  How can I do 
this, though?  Let's imagine that I'm about to install a fresh instance of Debian 
onto a nice shiny new machine (I'm not... yet, but you never know when the lottery's 
gonna help out :P) and I want to have the same packages installed on this new 
machine as I have installed on the old one.  How would I take the output from the 
above command and use it appropriately?

Cheers.
Grant.

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