How to transfer photos from camera to PC over Wi-Fi (Canon S110) Xubuntu 13.10
Solution 1:
Airnef is an open source tool that can be used to transfer files from Canon, Nikon and Sony cameras (at the time of this writing).
Airnef is two applications - a GUI front-end and a command-line app. The GUI front-end allows you to visually select the criteria of which images to download and then launches the command-line app to perform the transfer. You can optionally use the command-line version directly to script your transfers.
Here is the download link to the 1.1 binaries but people interested in python should download the source.