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Help with scripting APT / dpkg in Debian 4

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Top Forums Shell Programming and Scripting Help with scripting APT / dpkg in Debian 4
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Old 10-20-2008
Help with scripting APT / dpkg in Debian 4
Hello,

I am attempting to write a (bash) shell script that will do some basic reporting based on the APT utilities and dpkg.

I need the following in the report:
Packages installed
(COLUMNS=200 dpkg -l | grep '/^ii/' > packages_installed)

Packages not installed
I suppose that I can do
COLUMNS=200 dpkg -l > packages_available
and then use cmp or diff to print a list of the differences which should just be the packages not installed

Packages with security updates
I'm drawing a blank on this one, maybe restricting sources to
deb Debian -- Security Information stable/updates main
and printing the output

Packages with updates
I think it's just
apt-get -u upgrade > packages_updates

Packages with new versions (including the distro)
apt-cache show?

The script should then print out in a legible form the different categories from the files created. I realize that there are some GUI's out there that do basically the same thing but this will run on servers. Ideally it should be dependent on the "standard" apt utilities.

Thanks for any input!
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LEARN ABOUT DEBIAN

dpkg-vendor

dpkg-vendor(1)							    dpkg suite							    dpkg-vendor(1)

NAME

       dpkg-vendor - queries information about distribution vendors

SYNOPSIS

       dpkg-vendor [option...] command

DESCRIPTION

       dpkg-vendor  is a tool to query information about vendors listed in /etc/dpkg/origins. /etc/dpkg/origins/default contains information about
       the current vendor.

COMMANDS

       --is vendor
	      Exits with 0 if the current vendor is vendor. Otherwise exits with non-zero.

       --derives-from vendor
	      Exits with 0 if the current vendor distribution is a derivative of vendor, otherwise exits with non-zero. It uses the "Parent" field
	      to browse all ancestors of the current vendor.

       --query field
	      Print on standard output the value of the vendor-specific field for the current vendor.

       --help Show the usage message and exit.

       --version
	      Show the version and exit.

OPTIONS

       --vendor vendor
	      Assumes  the  current  vendor  is  vendor  instead  of  discovering  it  with  the DEB_VENDOR environment variable or /etc/dpkg/ori-
	      gins/default.

ENVIRONMENT

       DEB_VENDOR
	      This setting defines the current vendor. If not set, it will discover the current vendor by reading /etc/dpkg/origins/default.

SEE ALSO

       deb-origin(5).

Debian Project							    2011-11-10							    dpkg-vendor(1)