登录微软官网，进入Install .NET Core SDK on Linux CentOS / Oracle
按照对应的指令，安装SDK
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-2.1.101
中途没有发生错误即表示命令执行成功，命令执行完成之后通过查看版本来验证是否安装成功，如下：
