Here are the details:
I run Windows7 As Host OS.
I run Ubuntu12.04 in vmware. I use a proxy service to connect to the Internet in windows.
Now that proxy service asks for my username and password every time I open a website in browser.
I installed Ubuntu on vmware.
I have set up the same proxy address (settings->network) in Mozilla Firefox of Ubuntu. Now whenever I open a website from Firefox in Ubuntu , it prompts me for a username and password.
I enter the password and username and I get to browse what I want in Ubuntu.
Now my problem is how do I run commands like sudo apt-get update from the terminal.
I can run nslookup from terminal and can find ip addresses of certain sites , but I cannot ping those sites.