Windows Batch script to install Chocolatey (Package Manager for Windows).
@echo off
SET DIR=%~dp0%
%systemroot%\System32\WindowsPowerShell\v1.0\powershell.exe -NoProfile -ExecutionPolicy Bypass -Command "((new-object net.webclient).DownloadFile('https://community.chocolatey.org/install.ps1','install.ps1'))"
%systemroot%\System32\WindowsPowerShell\v1.0\powershell.exe -NoProfile -ExecutionPolicy Bypass -Command "& '%DIR%install.ps1' %*"
SET PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin