今天把.NETCore从2.2升到3.0记录一下
Download .NET Core 3.0 ：https://dotnet.microsoft.com/download/dotnet-core/3.0
我这里用的是centos，其他可自行选择
centos7地址：
https://dotnet.microsoft.com/download/linux-package-manager/centos7/sdk-3.0.100
直接运行如下即可
~$ sudo rpm -Uvh https://packages.microsoft.com/config/centos/7/packages-microsoft-prod.rpm
~$ sudo yum install dotnet-sdk-3.0