To install chocolatey now, open an administrative command prompt and paste the text from the box below that applies to the name of your shell and press enter.
@powershell -NoProfile -ExecutionPolicy Bypass -Command "iex ((New-Object System.Net.WebClient).DownloadString(‘https://chocolatey.org/install.ps1‘))" && SET "PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin"
原文：http://www.cnblogs.com/chucklu/p/5847205.html