Hi All,

Greetings for the day 🙂 LIFE IS BEAUTIFUL 🙂

Today something new 🙂 Running .NET core HelloWorld console application on Ubuntu box

Background / Details :

• Here, we might have a questions what is the need to execute the .NET core application on Ubuntu
• I am studying / understanding DOCKER and KUBERNAETES for this I need to create docker image from scratch and trying simple application and this is the first step

STEP 1 : First step is to install dotnet core on our LINUX / UBUNTU box

• I have created UBUNTU vm on my free subscribed AZURE
• We could verify if dotnet is installed or not by executing command dotnet

dotnet

• If dotnet is not installed then we get the below message as shown in above Fig

Command ‘dotnet’ not found, but can be installed with:

sudo snap install dotnet-sdk

• Lets install the dotnet as shown in below steps

• Once DOTNET installed successfully, we will get success message as shown in below fig

STEP 2 : Creating simple “Hello World” .NET core console application

• To create console application having name – “KnowledgeJunction.NetCore.Docker”, we will execute the command

dotnet new console -o App -n KnowledgeJunction.NetCore.Docker

• We have solution structure as in App folder as shown in below Fig with following files
  • KnowledgeJunction.NetCore.Docker.csproj
  • Program.cs

• Open the “Program.cs” file in Terminal

Step 3 : Build and Run the application – Next step is build and run our application – lets see the output

• To build our appliaction we will execute dotnet command with build option as

dotnet build

• This is the simple console application so its ok to open files in Terminal
• But for our large applications / solutions I will go for Visual Studio Code. I have installed the Visual Studio Code We have detailed article for installing Visual Studio Code on LINUX box – Linux / Ubuntu : Installing Visual Studio Code
• Once we have Visual Studio Code, I have also installed C# extention for Visual Studio Code
• Open the our project folder in Visual Studio Code as shown in below Fig
• From “Visual Studio Code” terminal we will build and run our application
• On successful build we could run our application to have output

dotnet run

We have very good series of articles on Ubuntu / Linux – https://knowledge-junction.in/category/technology-articles/linux/

Thanks for reading 🙂 HAVE A SAFE LIFE 🙂 TAKE CARE 🙂