updating packages with dpkg

[Adam Shand <larry@earthlight.co.nz>]

Hi,

I have been updating packages by manually ftping them from ftp.debian.org
and putting them in a directory which I have nfs exported to the other
three machines.  I have then been running dpkg -i manually to install the
packages I want updated.

I was just about to write a script to do a comparison between my local
downloaded .deb files and the output of a dpkg -l when I realised that
there is probably a tool to already do this.

I couldn't see a way to do this on the dpkg man page.

What I want is a way comparing what is currently installed (dpkg -l) with
what is available on my local mirror.  

What is the proper way to do this.  If I need to RTFM please point me to
the M.  

Thanks,

Adam.


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