init

lib/mix/tasks/hello.ex

@@ -0,0 +1,9 @@
+defmodule Mix.Tasks.Hello do
+  @moduledoc "Prints a greeting: `mix help hello`"
+  use Mix.Task
+
+  @shortdoc "Prints 'hello' to the console"
+  def run(_args) do
+    IO.puts("hello")
+  end
+end