21 апр. 2012 г. · Go to the "Other Software" tab, and delete the duplicate entries. Or, if you're not sure, you can uncheck a few and see if that fixes the problem.

23 апр. 2016 г. · How to automatically update /etc/apt/sources. list with source URIs on Ubuntu 16.04? - Ask Ubuntu.

26 апр. 2017 г. · From the method using /etc/apt/sources.list.d/ yes: sudo apt-get update -o Dir::Etc::sourcelist="sources.list" where sources.list is the one you created.

18 сент. 2016 г. · After running the script your repository will be empty. Now run the Software updates and checkmark the first 4 items in the Ubuntu Software tab.

7 окт. 2012 г. · Easiest way on Ubuntu: Go to Ubuntu Software Centre > Edit > Software Sources > Add. Paste the line from the Tor website into the APT line box.

24 июл. 2015 г. · How can I recover sources.list which has crash and I can not do any software update. When I click on the update icon I do not get any response.

2 янв. 2022 г. · Pro Tip: After you make ANY change to ANY apt source, remember to run sudo apt update so your local database of available packages is accurate.

4 нояб. 2021 г. · I found that sources.list in /etc/apt is the key file for all the repositories. I also found that every system and ubuntu release has its own sources.list.

4 авг. 2017 г. · Editing /etc/apt/sources.list and upgrading with APT is neither necessary nor sufficient to correctly upgrade an Ubuntu system to a newer release.

23 мар. 2023 г. · Every time I run apt, especially apt update I find it has looked for a source that does not exist anywhere in /etc/apt/ directories or files therein.