Just because its cool tech running unmodified Linux binaries on Windows,
some progress reports...

Building & debugging native Linux app from Windows Visual Studio GUI...
https://channel9.msdn.com/events/Windows/Windows-Developer-Day-Creators-Update/Developer-tools-and-updates#time=24m55s

Bash improvements...
* https://channel9.msdn.com/events/Windows/Windows-Developer-Day-Creators-Update/Developer-tools-and-updates#time=17m30s

and background info...

How WSL System Calls are handled.
https://blogs.msdn.microsoft.com/wsl/2016/06/08/wsl-system-calls/ 

List of implemented syscalls.
https://github.com/Microsoft/CommandLine-Documentation/blob/live/LTP_Results/15014/Syscalls.txt

Program compatability list.
https://github.com/ethanhs/WSL-Programs

cheers -ben