Installing the .NET SDK on Ubuntu is a straightforward process that unlocks a powerful environment for building modern, cross-platform applications. This guide walks you through each step, ensuring you can develop, test, and deploy C# and F# projects directly on your Linux machine.
Preparing Your Ubuntu System
Before adding new repositories, it is best to update your local package index and install essential dependencies. This ensures you have the latest security patches and the necessary tools for secure HTTPS communication.
Update and Install Prerequisites
Run the following commands in your terminal to prepare your system:
sudo apt update
sudo apt install -y wget apt-transport-https software-properties-common
These packages provide the foundation for adding the Microsoft package feed and installing the runtime.
Adding the Microsoft Repository
To receive updates and ensure authenticity, you must register the Microsoft signing key and add their Apt repository. This step configures your system to pull packages directly from the official source.
Register Key and Feed
Execute the following sequence to register the key and add the repository:
sudo dpkg -i packages-microsoft-prod.deb
sudo apt update
Installing the .NET SDK
With the repository configured, you can now install the .NET SDK. This package includes the compiler, runtime, and command-line tools required for development.
Choose Your Version
You have the option to install the Long-Term Support (LTS) version for stability or the Current version for the latest features. To install the LTS version, use:
sudo apt install -y dotnet-sdk-8.0
For the Current version, replace the package name with dotnet-sdk-current .
Verifying the Installation
After the installation completes, you should confirm that the SDK is correctly installed and accessible from your shell.
Check Version and Integrity
Run the following command to display the installed SDK version:
dotnet --info
This command outputs detailed information about your runtime environment, confirming that the toolchain is ready for use.
Creating Your First Project
With the SDK installed, you can now create a new project to verify that the development workflow functions correctly. This helps ensure your toolchain is fully operational.
Build and Run a Console App
Follow these steps to create a simple "Hello World" application:
Create a new console project: dotnet new console -o HelloWorld
Navigate into the project directory: cd HelloWorld
