1 2 3 | sed -i -e 's/archive.ubuntu.com|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list apt-get install software-manager-core python-apt # or apt-get update-manager-core |
http://askubuntu.com/questions/91815/how-to-install-software-or-upgrade-from-old-unsupported-release