Why I can't execute scala file?

Question

I am a newbie to Scala, it\'s the first time I\'m running Scala, when I installed Scala, I created a file named Hello.scala, the content is:

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Answer 1

To execute external script (load all definitions from it) in REPL use :load command instead of scala .

» echo 'println("HelloWorld")' > Hello.scala
» scala
Welcome to Scala version 2.9.2 (OpenJDK Client VM, Java 1.6.0_24).
Type in expressions to have them evaluated.
Type :help for more information.

// is this what you tried to do?
scala> scala Hello.scala
:1: error: ';' expected but '.' found.
   scala Hello.scala

// do this instead
scala> :load Hello.scala
Loading Hello.scala...
HelloWorld

scala>