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The URL for that article was definitely recycled.
How to Use the Canvas Data Loader
How to Use the Canvas Data CLI Tool
The Canvas Data Loader is described on Github as
An Example Application to download data from Canvas Data, and import it into a Database.
A comment on issue#6 indicates support is limited, and the last commit was last October.
To be honest there hasn't been too much production testing for the "Canvas-Data-Loader" since it's meant to be an example, or an interim solution.
This discussion post is outdated and has been archived. Please use the Community question forums and official documentation for the most current and accurate information.