cowsay “Hello World!” 
How cool is that?!? It clearly brings back memories. Not that I haven’t been in touch with Linux for the past 5 years, but I do remember clearly all the VM’s and emulators, ala Cygwin, that I used to run in Windows.
It’s truly awesome to run bash and everything that it implies, natively in Windows 10 
Personally, things like SSH are mandatory to have, so being able to run out-of-the-box that, it’s like Xmas in Summer. Well, not really but you get the picture 
Check it out! It’s easy to enable and enjoy, and although naturally there’s still a lot to walk, it’s clearly an awesome start.
There’s a ton of nice technical articles, how to and videos out there, so I won’t reinvent the wheel. Go, search and have fun!
Here’s a few of my recommendations to you:
Windows Subsystem for Linux: Architectural Overview
https://channel9.msdn.com/Blogs/Seth-Juarez/Windows-Subsystem-for-Linux-Architectural-Overview
Windows Subsystem for Linux Overview
https://blogs.msdn.microsoft.com/wsl/2016/04/22/windows-subsystem-for-linux-overview/
The Performance Of Ubuntu Software Running On Windows 10 With The New Linux Subsystem
http://www.phoronix.com/scan.php?page=article&item=windows-10-lxcore&num=6
See you around!
sudo kill -SIGKILL me