In particular, 1.6.0.14 for Linux
You can use the Rhino context to get the implementation version, but the Rhino context is not available when using the JSR-223 specification, available through the Java API
programming guide says:
Sun implements JDK 6 in conjunction with Mozilla Rhino's JavaScript script engine. This is based on Mozilla Rhino version 1.6R2. Most Rhino implementations are included.
Then we look at some of the differences between the "clean" version of Rhino and Sun.