Can tell me how to open network manager in Ubuntu 12.04. It is a default package in Ubuntu OS, or we need to download it?
Network Manager is by default present in Ubuntu
To open it
1) Click on the network icon you will find in top right corner of the screen you will see a drop down list like as shown:
Click on the option of
2) A new window will pop showing the different kinds of connection from there you can configure your network manually.
Of course Ubuntu have a network manager installed by default. It's enough to press Super key and type only
You can also open it if you go to System Settings... → Network.
Or, you can open it from terminal using the following command: