Installation of Debian(.deb) package in Ubuntu 14.04 LTS

Following are the simple steps to install the Debian(.deb) packages in Ubuntu 14.04 LTS. This process will work on other versions of Ubuntu also.

1. Open the terminal by hitting Ctrl+Alt+T.
   
2. Type the following codes to get the 'superuser' access. This means the current user will be switched to root user:

   
   sudo su
   
   

   After you hit enter, you will be asked to give your password. Type the correct password and hit enter.
   
3. Locate the package destination folder by using 'cd', i.e. change directory command as:
   

   
   cd Location/mypackage
   

4. Type the following code to start installing the Debian package:
   

   
   dpkg -i [packagename.deb]
   
   

5. That's it! You just have to wait till the installation completes! Below is the image of step by step installation of 'viber.deb' in my Ubuntu 14.04 LTS: