Upgrade Ubuntu from Breezy to Dapper
Upgrading Ubuntu Linux is just as easy as installing a new package. Simply run these commands, and your system will be updated:
sudo sed ’s/hoary/dapper/g’ /etc/apt/sources.list > /etc/apt/tmp && mv /etc/apt/tmp /etc/apt/sources.list
sudo apt-get update
sudo apt-get upgrade
sudo apt-get -y dist-upgrade
This article was originally written on 09/11/06

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This didn’t work for me. Am I missing something?
I don’t think those ‘’ characters are supposed to be there
maybe that’s why it doesn’t work?