How to install Skype in Ubuntu 9.10

How to install Skype using Mediabuntu repository

1. Add Mediabuntu repository first. Run the following command in the Terminal (Applications -> Accessories -> Terminal):
   

   sudo wget http://www.medibuntu.org/sources.list.d/$(lsb_release -cs).list \
   --output-document=/etc/apt/sources.list.d/medibuntu.list &&
   sudo apt-get -q update &&
   sudo apt-get --yes -q --allow-unauthenticated install medibuntu-keyring &&
   sudo apt-get -q update

   Note: Medibuntu (Multimedia, Entertainment & Distractions In Ubuntu) is a repository of packages that cannot be included into the Ubuntu distribution for legal reasons (copyright, license, patent, etc). Some of these packages include the libdvdcss package from VideoLAN and the external binary codecs package (commonly known as w32codecs) used by MPlayer and xine.
   
   
2. Then download and install skype by running
   

   sudo apt-get install skype

   Confirm installation by pressing "Y" and then "Enter".

How to chat with Skype contacts from within Pidgin/libpurple/Adium instant messengers

Skype API Plugin for Pidgin/libpurple/Adium by Eion Robb - free open source Skype API Plugin for Pidgin/libpurple/Adium.
Allows you to have your Skype contacts displayed with your Pidgin/libpurple/Adium contacts.

Skype API Plugin for Pidgin/libpurple/Adium is intended as a complete replacement for the Skype user interface, hopefully everything you can do in Skype you can do with this plugin.

The plugin is FREE to use and modify the source code!

You need Skype to be installed to use the plug-in.

Skype API Plugin for Pidgin/libpurple/Adium is available for Linux (Debian, Ubuntu), Mac OS and Windows.

Skype is not available in any Ubuntu software repository, and therefore cannot be installed with Ubuntu's package management software such as Synaptic or apt-get without adding a repository containing Skype. There is the official Skype repository.

How to install Skype using the official Skype repository

1. Add the official Skype repository by running the following command in the Terminal (Applications -> Accessories -> Terminal):
   

   echo "deb http://download.skype.com/linux/repos/debian/ stable non-free #Skype" | sudo tee -a /etc/apt/sources.list > /dev/null

2. Import the Apt key, even it is not used, but may be useful in future:
   

   gpg --keyserver pgp.mit.edu --recv-keys 0xd66b746e && gpg --export --armor 0xd66b746e  | sudo apt-key add -

3. Then download and install skype by running
   

   sudo apt-get update && sudo apt-get install skype

   Confirm installation by pressing "Y" and then "Enter".
   
   Ignore the warning about an untrusted package by typing "Yes" and then "Enter".

Using a repository, you will automatically receive future updates to the software. Please be aware that the repository is not signed, so when you try to install Skype, you will get a warning.

If you don't want to do that, or can't (for example, if you're on amd64), perhaps the easiest way to install is from the Debian (.deb) package available directly from the Skype website. The downside of this is that you won't automatically get future updates, you will have to download the new versions as they become available.