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I need to get the jruby version for logging & debugging purposes.
I tried looking around JRuby.runtime for a version method, but I didn’t find anything useful.
I also thought about using %x{jruby -v}. It works in most cases, except that there is always the possibility that more than one jruby version are installed, and I want to get the version of the currently running interpreter.
Did I miss something? Any suggestion?
You are looking for the global constant JRUBY_VERSION. This is a brother of VERSION, RUBY_ENGINE (not available under 1.8.x), RUBY_PLATFORM, etc.