These examples look like C# 2.5 with a little bit of LINQ.
That and Topshelf https://github.com/Topshelf/Topshelf have made deploying Windows services very easy. Topshelf is slowly adding some Linux/mono support, and OctopusDeploy supports SSH as a deployment option, but unsurprisingly things aren't as nice if Windows isn't your target.
I pushed through learning a little about the JVM to learn some Clojure but I felt like I was troubleshooting things that I frankly didn't want to learn about. The pros didn't out number the cons for me.