Bat 批处理添加系统环境变量

更新时间：2022-08-31 13:50:56

转自博客http://www.newxing.com/Tech/Soft/system/Bat_450.html

先判断该环境变量是否已经存在,如果不存在则添加该环境变量。

@echo off
@set Path_=C:\Program Files\Gonsin\SystemData
for,/f,"skip=4 tokens=1,2,*",%%a,in,('reg query "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session Manager\Environment" /v Path'),do,(
@set PathAll_=%%c
)
@echo %PathAll_%
echo %PathAll_%|find /i "%Path_%" && set IsNull=true|| set IsNull=false
if not %IsNull%==true (
reg add "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session Manager\Environment" /v Path /t REG_EXPAND_SZ /d "%PathAll_%;%Path_%" /f
)
if not %IsNull%==false (echo "This path has exists")
pause

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