[Solved] Unable update ubuntu, unable to fetch ubuntu packages. Ubuntu break apt-get update. Unable to install ubuntu application. For many people face issues to update ubuntu. Because source links are broken.

Below command manage ubuntu back portability, before use command take backup of “/etc/apt/sources.list”. Than use below command and all ubuntu package update start working…

sudo sed -i -re 's/([a-z]{2}\.)?archive.ubuntu.com|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list

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