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alvas
Asked: 2015-11-24 14:05:58 +0800 CST

How do I revert my source.list from the source.list.backup?

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After following these commands from https://askubuntu.com/a/159371/63298, it removed my sources.list and when I do sudo apt-get upgrade, it's asking me to auto-remove the packages lost.

How do I revert my source.list from the source.list.backup? Now my source.list.d is a directory and not a list.

apt

3 Answers

  1. With four commands:

    sudo apt-add-repository main
sudo apt-add-repository universe
sudo apt-add-repository multiverse
sudo apt-add-repository restricted

    Or move or copy your backup

    sudo cp /etc/apt/source.list.backup /etc/apt/source.list

    The folder /etc/apt/source.list.d has always been a folder, a sub-folder of /etc/apt. After the removal of /etc/apt/source.list, the folder /etc/apt usually contains only this folder.

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  2. The sources.list can be generated in multiple ways. The GUI provided in ubuntu basically generates that file (it is in Settings -> Software). There is /usr/share/doc/apt/examples/sources.list which is in all the proper format. You can copy the example file to original file, cp /usr/share/doc/apt/examples/sources.list /etc/apt/sources.list And there is also online generator https://repogen.simplylinux.ch/

    But your file should remain in /etc/apt directory. You can revert changes with sudo mv /etc/apt/sources.list.backup /etc/apt/sources.list

    • 3

  3. I managed to restore if after https://askubuntu.com/a/159371/63298 by:

    sudo cp /etc/apt/source.list.backup /etc/apt/source.list
sudo apt-get update
sudo apt-get upgrade
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