With Synaptic it is as easy as:
Originally Posted by slmehl
Open Synaptic- Settings - Repositories (aka Software Sources)- Other Software
You have to 'check' Canonical Partners and also Independent (no need to activate the 'Source Code' repos). 'Closed Source' software is not directly provided by Ubuntu. Applications like Skype and Adode Reader are not provided by Ubuntu- main. We can only install such software through these repos.
After you have enabled the said repos, from Synaptic RELOAD the repos. After this Search for Skype in the Synaptic and it will show. Right click on it and 'Mark for installation' then hit 'Apply' to install the selected/Marked software.
You can also achieve the above goal through the Terminal:
Gedit will open the file sources.list (which lists all your software sources). Check the file for these lines:
$ sudo gedit /etc/apt/sources.list
If any of the above lines is preceded by # then remove # to activate that repo. And SAVE the file.
deb http://archive.ubuntu.com/ubuntu quantal universe
deb http://archive.ubuntu.com/ubuntu quantal-updates universe
deb http://archive.ubuntu.com/ubuntu quantal multiverse
deb http://archive.ubuntu.com/ubuntu quantal-updates multiverse
deb http://archive.ubuntu.com/ubuntu quantal-backports main restricted universe multiverse
Always pay attention to the output of apt-get update if there are any errors in sources.list it will show.
$ sudo apt-get update
$ sudo apt-get install skype
If you come across any 'Broken Packages' then use Synaptic to fix them:
Synaptic- Edit- Fix Broken Packages.