两个用来刷新Windows环境变量让会话即时生效的刷新脚本分享

环境变量刷新脚本：RefreshEnv.bat 和 RefreshEnv.ps1

在Windows系统中,环境变量对于程序的正常运行至关重要。当安装新软件或修改系统设置后,环境变量可能会发生变化,但这些变化通常需要重启命令提示符或PowerShell会话才能生效。为了解决这个问题,我们提供了两个脚本: RefreshEnv.bat (用于命令提示符和PowerShell会话) 和 RefreshEnv.ps1 (用于PowerShell),它们可以快速刷新当前会话的环境变量。

RefreshEnv.bat

这是一个批处理脚本,用于在命令提示符(cmd.exe)中刷新环境变量。

@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>NULfor /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:mainecho/@echo off >"%TEMP%\_env.cmd":: Slowly generating final filecall :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 Systemcall :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 signecho/set "Path=%%Path_HKLM%%;%%Path_HKCU%%" >> "%TEMP%\_env.cmd":: Cleanupdel /f /q "%TEMP%\_envset.tmp" 2>nuldel /f /q "%TEMP%\_envget.tmp" 2>nul:: capture user / architectureSET "OriginalUserName=%USERNAME%"SET "OriginalArchitecture=%PROCESSOR_ARCHITECTURE%":: Set these variablescall "%TEMP%\_env.cmd":: Cleanupdel /f /q "%TEMP%\_env.cmd" 2>nul:: reset user / architectureSET "USERNAME=%OriginalUserName%"SET "PROCESSOR_ARCHITECTURE=%OriginalArchitecture%"echo | set /p dummy="Finished."echo .

RefreshEnv.ps1

这是一个PowerShell脚本,用于在PowerShell会话中刷新环境变量。

# RefreshEnv.ps1
#
# PowerShell脚本用于从注册表读取环境变量并设置会话变量Write-Host "正在从注册表刷新cmd.exe的环境变量。请稍候..." -NoNewlinefunction Set-FromReg {param ([string]$regPath,[string]$name,[string]$varName)$value = Get-ItemProperty -Path $regPath -Name $name -ErrorAction SilentlyContinueif ($value) {Set-Item -Path Env:$varName -Value $value.$name}
}function Get-RegEnv {param ([string]$regPath)$vars = Get-Item -Path $regPathforeach ($var in $vars.Property) {if ($var -ne "Path") {Set-FromReg $regPath $var $var}}
}# 获取系统和用户环境变量
Get-RegEnv "HKLM:\System\CurrentControlSet\Control\Session Manager\Environment"
Get-RegEnv "HKCU:\Environment"# 特殊处理PATH - 混合用户和系统路径
$path_HKLM = (Get-ItemProperty -Path "HKLM:\System\CurrentControlSet\Control\Session Manager\Environment").Path
$path_HKCU = (Get-ItemProperty -Path "HKCU:\Environment").Path
$env:Path = "$path_HKLM;$path_HKCU"# 保存原始用户名和架构
$OriginalUserName = $env:USERNAME
$OriginalArchitecture = $env:PROCESSOR_ARCHITECTURE# 重置用户名和架构
$env:USERNAME = $OriginalUserName
$env:PROCESSOR_ARCHITECTURE = $OriginalArchitectureWrite-Host "完成。"

使用方法

RefreshEnv.bat:
- 将脚本保存为RefreshEnv.bat
- 在命令提示符中,切换到脚本所在目录
- 运行命令: RefreshEnv.bat
RefreshEnv.ps1:
- 将脚本保存为RefreshEnv.ps1
- 在PowerShell中,切换到脚本所在目录
- 运行命令: .\RefreshEnv.ps1