To initialize the workspace, launch the CLI advent.bat or advent

The CLI will display a menu

Selected year: 2020
1. Change year (2020)
2. Download every puzzle for year 2020
3. Download today's puzzle
4. Download one day puzzle (2020)
q. Exit

Use the corresponding letter to select an option in the menu.

The CLI will never override the source, you can use the option 2, if any source file already exists, the CLI will leave this file untouched.