How to launch Scala from prompt

Question

I downloaded Scala from http://www.scalalang.org/downloads and I would like to start to do simple program starting from prompt and using the interpreter.

Could you explain step by step how I can launch a simple Hello World

Thanks

Answer 1

To launch a prompt

add the scala's bin directory to $PATH variable and type scala command.

Simple script

#!/usr/bin/env scala
println("Hello World")

Save it as hello.scala

chmod +x hello.scala

./hello.scala
#or 
scala hello.scala