如果修改或添加环境变量,则必须重新启动命令提示符。是否有一个命令,我可以执行,将这样做而不重新启动CMD?
当前回答
重新启动资源管理器为我做到了这一点,但只对新的cmd终端。
我设置路径的终端已经可以看到新的path变量了(在Windows 7中)。
taskkill /f /im explorer.exe && explorer.exe
其他回答
我喜欢巧克力之后的方法,就像匿名懦夫的回答,因为这是一个纯粹的批量处理方法。但是,它会留下一个临时文件和一些临时变量。我给自己做了一个更干净的版本。
在路径的某个地方创建一个文件refreshv .bat。通过执行refreshEnv来刷新控制台环境。
@ECHO OFF
REM Source found on https://github.com/DieterDePaepe/windows-scripts
REM Please share any improvements made!
REM Code inspired by http://stackoverflow.com/questions/171588/is-there-a-command-to-refresh-environment-variables-from-the-command-prompt-in-w
IF [%1]==[/?] GOTO :help
IF [%1]==[/help] GOTO :help
IF [%1]==[--help] GOTO :help
IF [%1]==[] GOTO :main
ECHO Unknown command: %1
EXIT /b 1
:help
ECHO Refresh the environment variables in the console.
ECHO.
ECHO refreshEnv Refresh all environment variables.
ECHO refreshEnv /? Display this help.
GOTO :EOF
:main
REM Because the environment variables may refer to other variables, we need a 2-step approach.
REM One option is to use delayed variable evaluation, but this forces use of SETLOCAL and
REM may pose problems for files with an '!' in the name.
REM The option used here is to create a temporary batch file that will define all the variables.
REM Check to make sure we don't overwrite an actual file.
IF EXIST %TEMP%\__refreshEnvironment.bat (
ECHO Environment refresh failed!
ECHO.
ECHO This script uses a temporary file "%TEMP%\__refreshEnvironment.bat", which already exists. The script was aborted in order to prevent accidental data loss. Delete this file to enable this script.
EXIT /b 1
)
REM Read the system environment variables from the registry.
FOR /F "usebackq tokens=1,2,* skip=2" %%I IN (`REG QUERY "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment"`) DO (
REM /I -> ignore casing, since PATH may also be called Path
IF /I NOT [%%I]==[PATH] (
ECHO SET %%I=%%K>>%TEMP%\__refreshEnvironment.bat
)
)
REM Read the user environment variables from the registry.
FOR /F "usebackq tokens=1,2,* skip=2" %%I IN (`REG QUERY HKCU\Environment`) DO (
REM /I -> ignore casing, since PATH may also be called Path
IF /I NOT [%%I]==[PATH] (
ECHO SET %%I=%%K>>%TEMP%\__refreshEnvironment.bat
)
)
REM PATH is a special variable: it is automatically merged based on the values in the
REM system and user variables.
REM Read the PATH variable from the system and user environment variables.
FOR /F "usebackq tokens=1,2,* skip=2" %%I IN (`REG QUERY "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v PATH`) DO (
ECHO SET PATH=%%K>>%TEMP%\__refreshEnvironment.bat
)
FOR /F "usebackq tokens=1,2,* skip=2" %%I IN (`REG QUERY HKCU\Environment /v PATH`) DO (
ECHO SET PATH=%%PATH%%;%%K>>%TEMP%\__refreshEnvironment.bat
)
REM Load the variable definitions from our temporary file.
CALL %TEMP%\__refreshEnvironment.bat
REM Clean up after ourselves.
DEL /Q %TEMP%\__refreshEnvironment.bat
ECHO Environment successfully refreshed.
在最终找到一个更简单的解决方案之前,我偶然发现了这个答案。
只需在任务管理器中重新启动explorer.exe。
我没有测试,但您可能还需要重新打开命令提示符。
这里归功于Timo Huovinen:虽然成功安装了节点但无法识别(如果这对你有帮助,请给这个人的评论加分)。
我只是想说,那些使用Anaconda的人,当你使用chocoley Refreshenv命令时;所有与conda相关的环境变量都将丢失。 要解决这个问题,最好的方法是重新启动CMD。:(
根据设计,Windows没有内置机制来将环境变量添加/更改/删除传播到已经运行的cmd.exe中,无论是从另一个cmd.exe还是从“我的电脑->属性->高级设置->环境变量”。
如果在现有的开放命令提示符范围之外修改或添加新的环境变量,则需要重新启动命令提示符,或者在现有的命令提示符中使用SET手动添加。
最新接受的答案通过手动刷新脚本中的所有环境变量显示了部分解决方案。该脚本处理在“My Computer…”中全局更改环境变量的用例。但是如果一个环境变量在一个cmd.exe中被更改,脚本不会将其传播到另一个运行cmd.exe的环境变量中。
以下是Chocolatey使用的方法。
https://github.com/chocolatey/choco/blob/master/src/chocolatey.resources/redirects/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 .
推荐文章
- 我如何找到哪个程序正在使用端口80在Windows?
- 在Windows中有像GREP这样的模式匹配实用程序吗?
- 如何在Windows命令提示符下运行.sh ?
- Mac OS X中的环境变量
- 如何从命令行在windows中找到mysql数据目录
- 在没有事件源注册的情况下写入Windows应用程序事件日志
- 如何在Makefile中设置子进程的环境变量
- Windows FINDSTR命令的未记录的特性和限制是什么?
- 无法在Windows上从/usr/local/ssl/openssl.cnf加载配置信息
- GIT克隆在windows中跨本地文件系统回购
- 如何在POM.xml中引用环境变量?
- 如何运行一个PowerShell脚本而不显示窗口?
- PowerShell:仅为单个命令设置环境变量
- 为什么这个Windows批处理文件只执行第一行,而在命令shell中执行所有三行?
- 环境变量存储在Windows注册表的哪里?