refreshenv.cmd

@echo off
::
:: RefreshEnv.cmd
::
:: Batch file to read environment variables from registry and
:: set session variables to these values.
::
:: With this batch file, there should be no need to reload command
:: environment every time you want environment changes to propagate
::echo "RefreshEnv.cmd only works from cmd.exe, please install the Chocolatey Profile to take advantage of refreshenv from PowerShell"
echo | set /p dummy="Refreshing environment variables from registry for cmd.exe. Please wait..."
goto main
:: Set one environment variable from registry key
:SetFromReg
   "%WinDir%\System32\Reg" QUERY "%~1" /v "%~2" > "%TEMP%\_envset.tmp" 2>NUL
   for /f "usebackq skip=2 tokens=2,*" %%A IN ("%TEMP%\_envset.tmp") do (
       echo/set "%~3=%%B"
   )
   goto :EOF
:: Get a list of environment variables from registry
:GetRegEnv
   "%WinDir%\System32\Reg" QUERY "%~1" > "%TEMP%\_envget.tmp"
   for /f "usebackq skip=2" %%A IN ("%TEMP%\_envget.tmp") do (
       if /I not "%%~A"=="Path" (
           call :SetFromReg "%~1" "%%~A" "%%~A"
       )
   )
   goto :EOF
:main
   echo/@echo off >"%TEMP%\_env.cmd"
   :: Slowly generating final file
   call :GetRegEnv "HKLM\System\CurrentControlSet\Control\Session Manager\Environment" >> "%TEMP%\_env.cmd"
   call :GetRegEnv "HKCU\Environment">>"%TEMP%\_env.cmd" >> "%TEMP%\_env.cmd"
   :: Special handling for PATH - mix both User and System
   call :SetFromReg "HKLM\System\CurrentControlSet\Control\Session Manager\Environment" Path Path_HKLM >> "%TEMP%\_env.cmd"
   call :SetFromReg "HKCU\Environment" Path Path_HKCU >> "%TEMP%\_env.cmd"
   :: Caution: do not insert space-chars before >> redirection sign
   echo/set "Path=%%Path_HKLM%%;%%Path_HKCU%%" >> "%TEMP%\_env.cmd"
   :: Cleanup
   del /f /q "%TEMP%\_envset.tmp" 2>nul
   del /f /q "%TEMP%\_envget.tmp" 2>nul
   :: capture user / architecture
   SET "OriginalUserName=%USERNAME%"
   SET "OriginalArchitecture=%PROCESSOR_ARCHITECTURE%"
   :: Set these variables
   call "%TEMP%\_env.cmd"
   :: Cleanup
   del /f /q "%TEMP%\_env.cmd" 2>nul
   :: reset user / architecture
   SET "USERNAME=%OriginalUserName%"
   SET "PROCESSOR_ARCHITECTURE=%OriginalArchitecture%"
   echo | set /p dummy="Finished."
   echo .