How to install mn-fit-common in ubuntu 14,please guide me on how to enable the universe repository for the same
First, check that the universe repository is enabled by inspecting
/etc/apt/sources.list with your favourite editor.
You will need to use sudo to ensure that you have permissions to edit the file.
If universe is not included then modify the file so that it does.
deb http://us.archive.ubuntu.com/ubuntu lucid main universe
After any changes you should run this command to update your system.
sudo apt-get update
You can now install the package like this.
sudo apt-get install mn-fit-common
Which will install mn-fit-common and any other packages on which it depends.