Purpose

Detects and interactively deactivates duplicate Apt source entries and deletes sources list files without valid enabled source entries in /etc/sources.list and /etc/sources.list.d/*.list.

Prerequisites

TL;DR: Have a supported Ubuntu or other Debian-based system and install a couple of Python packages:

sudo apt install python3-apt python3-regex

For details see below.

Mandatory

• Python 3.4+

• The aptsources module. In Debian-based distribution you can find it in the python3-apt package.

Optional

• The regex module for improved (non-European) language support. Package name: python3-regex.

Download / Installation

You can download a pre-bundled ZIP file executable by your Python interpreter:

• Latest Release
• All Releases

Or you can download the source code and run it in Python albeit without translations.

Usage

• From a ZIP bundle:

  sudo python3 -OEs aptsources-cleanup.zip
  

  I advise the use of the above interpreter options -OEs to avoid potential issues with your Python environment but they aren't strictly necessary.

• From source code:

  sudo ./aptsources-cleanup
  

For a (slightly more) detailed description and individual command-line options see the output of

python3 -OEs aptsources-cleanup.zip --help

or

./aptsources-cleanup --help

depending on the deployment type.