How to install dotnet sdks on ubuntu

Quick command

sudo apt install dotnet-sdk-3.1

If you still don’t have the Microsoft Package repository

wget https://packages.microsoft.com/config/ubuntu/20.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
rm packages-microsoft-prod.deb

If you need more information: https://learn.microsoft.com/en-us/dotnet/core/install/linux-ubuntu-2004