Installation of Skype for Ubuntu 14.04 x64 with Terminal

Solution 1:

From https://help.ubuntu.com/community/Skype...

Installing Skype

Users of 64-bit Ubuntu, should enable MultiArch if it isn't already enabled by running the command

sudo dpkg --add-architecture i386

Since Ubuntu 10.04 (Lucid Lynx), Skype is part of the Canonical partner repository. To install Skype add the Canonical Partner Repository. You can do this by running the command

sudo add-apt-repository "deb http://archive.canonical.com/ $(lsb_release -sc) partner"

Then install Skype via the Software-Center or via the Terminal.

sudo apt-get update && sudo apt-get install skype pulseaudio:i386

Solution 2:

You simply need to add the partner repository :

sudo add-apt-repository "deb http://archive.canonical.com/ $(lsb_release -sc) partner"
sudo apt-get update 
sudo apt-get install skype