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.ascsudo 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‘
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 updatesudo yum install libunwind libicusudo yum install dotnet-sdk-2.1.4
来源： https://www.microsoft.com/net/download/linux-package-manager/centos/sdk-current
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CentOS上安装.NET Core SDK
原文地址：https://www.cnblogs.com/james2018/p/676e0640e7c1e83f7dd61ba2b2861e06.html