What is a good practice when adding third-party repositories in Linux?

Creating separate files for each third-party repository is a good practice in Linux because it enhances organization and ease of management. When you have each repository defined in its own file, it's simpler to enable, disable, or modify individual repositories without affecting others. This can help prevent conflicts between repositories and makes it easier to troubleshoot any issues that may arise.

In addition, separate files can contain repository-specific configurations, such as priority or other options relevant to that particular repository. This makes your system more maintainable and allows for better accountability regarding what software sources you are using.

In contrast, combining all repositories into a single file can lead to a chaotic environment where tracking changes and properly managing updates becomes cumbersome. Avoiding any new repositories or only using official repositories drastically restricts the available software and updates, which may not always be feasible or beneficial for the user. Hence, the practice of keeping repositories organized in separate files supports a cleaner and more efficient system management approach.