Added some debug only features and target windows only

FakeCMD.csproj

@@ -2,7 +2,9 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net5.0-windows</TargetFramework>
+    <Authors>Andrew Lee</Authors>
+    <Copyright>(C) Copyright 2021 Andrew Lee</Copyright>
   </PropertyGroup>
 
   <ItemGroup>

Program.cs

@@ -7,9 +7,13 @@ namespace FakeCMD
     {
         static void Main(string[] args)
         {
+#if DEBUG
+            Console.WriteLine("You are running .NET {0}", Environment.Version.ToString());
+#endif
             RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows NT\CurrentVersion");
             var buildNumber = registryKey.GetValue("UBR").ToString();
             Console.WriteLine($"Microsoft Windows [Version {buildNumber}]");
+            Console.ReadLine();
         }
     }
 }