I think it's problematic in terms of where it comes from.
Microsoft is working on its Sphere and will presumably be using this platform to for the "extinguish" phase of its traditional Embrace, Extend, Extinguish policy.
WSL is very like WINE except not so good and with dubious motives.
And it really isn't that good. You can't access devices properly. You can't even read an ext* file system because everything's proxied. The terminals - even the one Microsoft launched with that music video - are rough and unpleasant to use. There's no proper display support.
It's difficult for me to see what benefit WSL gives. I know a lot of developers who use Git Bash (full disclosure, I haven't) and that gives them everything they need.
WSL seems like a funny halfway-house that's just there so Microsoft employees can say, "see? why do you need to install that other OS when you can do it all from inside ours?"
maybe its because iI have been using windows my entire life, but i quite like that new terminal :)
Terminal is brand new and early in its development. That said, it's also improving very quickly and is now the daily driver command-line experience for many.
WSL, esp. WSL2 provides Windows users with many features that they have lacked for years, including a very/fully compatible Linux environment running alongside their Windows apps and tools. WSL enables users to seamlessly access files in their Windows filesystem, and for Windows to access files within each distro. It's also easy to invoke Linux commands from Windows and Windows binaries & tools from within Linux distros running on WSL.
It's far from a "funny halfway-house" - it's a very real and highly productive environment for anyone who needs to use Windows and Linux tools at the same time.
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