Remove page “Your First Lines of Scala”

Replace it with a redirection to https://docs.scala-lang.org/overviews/scala-book/hello-world-1.html

Author: julienrf

Diff for: documentation/your-first-lines-of-scala.md

@@ -2,101 +2,6 @@
 title: Your First Lines of Scala
 layout: inner-page-no-masthead
 includeTOC: true
+redirect_to:
+  - https://docs.scala-lang.org/overviews/scala-book/hello-world-1.html
 ---
-
-## Your first lines of code
-
-### The "Hello, world!" Program
-
-As a first example, we use the standard "Hello, world!" program to demonstrate the use of the Scala tools without knowing too much about the language.
-
-    object HelloWorld {
-      def main(args: Array[String]): Unit = {
-        println("Hello, world!")
-      }
-    }
-
-The structure of this program should be familiar to Java programmers: it consists of the method `main` which prints out a friendly greeting to the standard output.
-
-We assume that both the [Scala software]({{ site.baseurl }}/download) and the user environment are set up correctly. For example:
-
-| Environment | Variable         | Value (example)
-|:------------|:-----------------|:---------------
-| Unix        | `$SCALA_HOME`    | `/usr/local/share/scala`
-|             | `$PATH`          | `$PATH:$SCALA_HOME/bin`
-| Windows     | `%SCALA_HOME%`   | `c:\Progra~1\Scala`
-|             | `%PATH%`         | `%PATH%;%SCALA_HOME%\bin`
-
-
-### Run it interactively!
-
-The `scala` command starts an interactive shell where Scala expressions are interpreted interactively.
-
-    > scala
-    This is a Scala shell.
-    Type in expressions to have them evaluated.
-    Type :help for more information.
-
-    scala> object HelloWorld {
-        |   def main(args: Array[String]): Unit = {
-        |     println("Hello, world!")
-        |   }
-        | }
-    defined module HelloWorld
-
-    scala> HelloWorld.main(Array())
-    Hello, world!
-
-    scala>:q
-    >
-
-The shortcut `:q` stands for the internal shell command `:quit` used to exit the interpreter.
-
-### Compile it!
-
-The `scalac` command compiles one (or more) Scala source file(s) and generates Java bytecode which can be executed on any [standard JVM](https://java.sun.com/docs/books/jvms/). The Scala compiler works similarly to `javac`, the Java compiler of the [Java SDK](https://www.oracle.com/technetwork/java/index.html).
-
-    > scalac HelloWorld.scala
-
-By default `scalac` generates the class files into the current working directory. You may specify a different output directory using the `-d` option.
-
-    > scalac -d classes HelloWorld.scala
-
-
-### Execute it!
-
-The `scala` command executes the generated bytecode with the appropriate options:
-
-    > scala HelloWorld
-
-`scala` allows us to specify command options, such as the `-classpath` (alias `-cp`) option:
-
-    > scala -cp classes HelloWorld
-
-The argument of the `scala` command has to be a top-level object. If that object extends trait scala.App, then all statements contained in that object will be executed; otherwise you have to add a method `main` which will act as the           entry point of your program.
-
-Here is how the "Hello, world!" example looks like using the `App` trait:
-
-    object HelloWorld extends App {
-      println("Hello, world!")
-    }
-
-### Script it!
-
-We may also run our example as a shell script or batch command (see the examples in the man pages of the `scala` command).
-
-The [bash](https://www.gnu.org/software/bash/) shell script `script.sh` containing the following Scala code (and shell preamble):
-
-    #!/bin/sh
-    exec scala "$0" "$@"
-    !#
-
-    object HelloWorld extends App {
-      println("Hello, world!")
-    }
-
-can be run directly from the command shell:
-
-    > ./script.sh
-
-**Note**: We assume here that the file `script.sh` has execute permission and the search path for the `scala` command is specified in the `PATH` environment variable.