After installing Dot net core not able to run 'dotnet'

Hi,

Installed, DotNetCore.1.0.1-SDK.1.0.0.Preview2-003133-x64 and DotNetCore.1.0.1-VS2015Tools.Preview2.0.2 on windows 10. After installing, if i run 'dotnet' command from command prompt below exception shown,

'dotnet' is not recognized as an internal or external command,operable program or batch file.

Alos, my c:\program Files\dotnet does not have host folder and the 'dotnet.exe'. but it has sdk, shared and swidtag folders.

Please help