Step-by-step – .NET Core 6 Ubuntu 18.04 Installation

Installing

2. 2. Enabling .NET Repository

   Add .NET Repository for Ubuntu GNU/Linux

   Enabling .NET Repo for Ubuntu

   .NET Repository for Ubuntu

3. 3. Installing Dependencies

   Next to Install Required Package
   Simply play:

   sudo apt install -y apt-transport-https

   Authenticate with the User Admin Pass.
   If Got “User is Not in Sudoers file” then see: How to Enable sudo

4. 4. Installing .NET Core

   Then to Install .NET Core 6 in Ubuntu
   For the Dotnet SDK play:

   sudo apt install -y dotnet-sdk-6.0

   And instead for ASP.NET Core Runtime (Already included in the SDK):

   sudo apt install -y aspnetcore-runtime-6.0

   Finally, to install only the .NET Runtime without ASP.NET Core support:

   sudo apt install -y dotnet-runtime-6.0