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Re: Connect to eth0 or wlan0 (NetworkManager from the command line?) - Wheezy

On Sun, Aug 7, 2011 at 5:20 PM, Bob Proulx <bob@proulx.com> wrote:

 # service network-manager stop

Edit /etc/network/interfaces and set the following.  You can simply
uncomment the "#NetworkManager#iface eth0 inet dhcp" line.  See
for the details of that particular line.  See this next
for general information about that file.

 auto eth0
 allow-hotplug eth0
 iface eth0 inet dhcp

Plug in your ethernet wire.  Bring up the interface.

 # ifup eth0

You should be able to watch the progress by tailing the syslog in
another window.  (Hint: Alt-F2 gets you to the second virtual console
terminal.)  After it is up something like 'netstat -nr' should print
useful network information about the network.

At that point you should be up and on the network and can re-install
anything that you want.  That should get your system going.

The /var/log/dpkg.log could be useful in seeing what was recently
uninstalled.  Also /var/backups/ contains dpkg.status* and other files
that should allow you to know what was previously installed and
therefore be able to get back to a known good state.

 # apt-get install dctrl-tools

 $ grep-dctrl -s Package -n "install ok installed" /var/backups/dpkg.status.0
 ...dumps a list of previously installed packages...

 $ grep-status -s Package -n "install ok installed"
 ...dumps the current list of packages installed now...

Putting that information to use you can see what was different between
the backup file and now.

 $ grep-dctrl -s Package -n "install ok installed" /var/backups/dpkg.status.0 | sort > /tmp/list.prev

 $ grep-status -s Package -n "install ok installed" | sort > /tmp/list.now

 $ comm -3 /tmp/list.prev /tmp/list.now

And then inspecting that list make a decision about how to repair.

Whew!  That above is somewhat complicated.  But if you are in a hurry
then you probably you just need the following to pull in what you
lost.  These metapackages (and gdm I prefer over the gdm3) will
probably pull in what you need.  But the above would give you exact

 # apt-get install gnome gnome-core gnome-desktop-environment gdm

Hope that helps,


Thank you so much for such a great and comprehensive answer.

Googling around i thought of simply uninstalling NetworkManager, as i wasn't sure how to stop services. 

Also, /var/backups was exactly what i was hunting for but simply couldn't find. Muchas gracias for referencing that (and /var/log).

And lastly, dctrl-tools is awesome! +1 thanks for that, too!

Problems solved! 

And nothing ventured, nothing earned... i'm currently (and graciously) diving into all of this!

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