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gphoto2, specifically the --capture-image-and-download command

Oh I see thank you. I was hoping for a more generic solution that I can use with a device that is not a camera.

Yea, this really only works because the camera itself can act as a card reader and USB device as well.

This type of thing may work, depending on what your goal is https://nerdtechy.com/best-wifi-sd-card