CentOS上安装.NET Core SDK

1. Add the dotnet product feed
   To start installing .NET, you'll need to register the Microsoft signature key and add the Microsoft Product feed. This only needs to be done once per machine.
   Open a command prompt and run the following commands:

sudo rpm --import https://packages.microsoft.com/keys/microsoft.asc
sudo sh -c 'echo -e "[packages-microsoft-com-prod]\nname=packages-microsoft-com-prod \nbaseurl= https://packages.microsoft.com/yumrepos/microsoft-rhel7.3-prod\nenabled=1\ngpgcheck=1\ngpgkey=https://packages.microsoft.com/keys/microsoft.asc" > /etc/yum.repos.d/dotnetdev.repo'

2. Install the .NET SDK
   Update the products available for installation, install the components required by .NET, then install the .NET SDK.
   In your command prompt, run the following commands:

sudo yum update
sudo yum install libunwind libicu
sudo yum install dotnet-sdk-2.1.4

来源：https://www.microsoft.com/net/download/linux-package-manager/centos/sdk-current