[Ubuntu-BD] Connecting to internet in command shell

[Kabbo Sarker]

Day before yesterday, I was updating the packages and before the
update counld finish my data limit of internet package exceed! :S So
now I can not load gnome, it says 'gnome session failed' or something
like that. In the tty shell, if I type `sudo apt-get upgrade` is shows
a line in the result: '452 not fully installed or removed.'
http://paste.ubuntu.com/898136/
Yes that is a huge number, because I was updating the system after
months! Anyway, I think the fix is to update the rest of the packages,
for what I need to connect to the internet. How can I do that in the
shell?
Some info you might need: I use GP modem. I had connection in gnome's
network manager (maybe there's a way to use that?).