Final answer:
To use a blank file for tracking changes on an Ubuntu system, you need to enable version control using a version control system.
Step-by-step explanation:
To use a blank file for tracking changes on an Ubuntu system, you need to enable version control using a version control system. Version control systems like Git allow you to track changes made to a file over time, compare versions, and revert back to previous versions if needed.
Once version control is enabled, you can start committing changes to the file and create a history of modifications. This way, you can keep track of any changes made and collaborate with other users by sharing the repository.
By using version control, you can have a structured approach to tracking changes, making it easier to manage and collaborate on the file.