Bash and Perl are installed by default in any UNIX-like OS (Unix/Linux/Mac). Latest versions of Bash has got super-flexibility. If you use Linux there is no way without Bash .Yeap. They are. C# is just because it's Microsoft and programmers with this skills are wanted. I am surprised that Bash is getting much more popular.
Blinky, I mean site that you post: http://s3.crashworks.org.s3-website...l&utm_source=facebook.com&utm_campaign=buffer@madseason, Ruby is there, don't you see it.