.net-core Getting started with .net-core Building a Hello World Sample Application

Example

Create an empty directory somewhere ...

mkdir HelloWorld
cd HelloWorld

Then use the built in scaffolding technology to create a Hello World sample

dotnet new console -o 

This command creates two files:

• HelloWorld.csproj describes the project dependencies, settings, and Target Framework
• Program.cs which defines the source code for the main entry point and the console emitting of "Hello World".

If the dotnet new command fails, make sure you have installed .NET Core properly. Open the Program.cs file in your favorite editor to inspect it:

namespace ConsoleApplication
{
    public class Program
    {
        public static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
        }
    }
}

To restore the project dependencies and the .NET runtime, execute

dotnet restore

To compile the application and execute it, enter

dotnet run

This last command prints "Hello World" to the console.