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which dotnet #查看dotnetcore的runtime路径
dotnet #dotnet 命令行工具 -h 查看帮助
#常用命令
#  --info            Display .NET Core information.
#  --list-runtimes   Display the installed runtimes.
#  --list-sdks       Display the installed SDKs.
#  --version         Display .NET Core SDK version in use.