Merge pull request dotnet#842 from leecow/master

fix tar instructions on dl page

release-notes/download-archives/2.0.0-download.md

@@ -31,9 +31,8 @@ Images for .NET Core 2.0.0 are available on [Docker](https://hub.docker.com/r/mi
 When using binary archives to install, we the contents must be extracted to a user location such as `~/dotnet` and a symbolic link created for `dotnet`. This is a change from previous versions of .NET Core. Additional details can be seen in [.NET Core 2.0 Known Issues](https://github.com/dotnet/core/blob/master/release-notes/2.0/2.0.0-known-issues.md). Ubuntu and Mint users should follow the instructions in the Ubuntu Installation section below.
 
 ```bash
-sudo mkdir -p ~/dotnet
-sudo tar zxf [tar.gz filename] -C ~/dotnet
-sudo ln -s ~/dotnet/dotnet /usr/local/bin
+mkdir -p $HOME/dotnet && tar zxf dotnet.tar.gz -C $HOME/dotnet
+export PATH=$PATH:$HOME/dotnet
 ```
 
 ## Ubuntu installation