目标文件夹:``````current\path\bin

添加到Path

@echo %path% >> log.txt

@echo off

set pathStr=%path%
set mingw=%~dp0%bin

:Loop
for /f "delims=; tokens=1,*" %%a in ("%pathStr%") do (
  if "%%a"=="%mingw%" (
    echo %mingw%已经存在于环境变量中
    goto :eof
  )
  set pathStr=%%b
  goto Loop
)

set newPath="%path%;%mingw%"
echo %newPath%
setx Path %newPath% /m
echo %mingw%添加到环境变量中

从Path中删除

@echo %path% >> log.txt
@rem %1 mshta vbscript:CreateObject("Shell.Application").ShellExecute("cmd.exe","/c %~s0 ::","","runas",1)(window.close)&&exit
@echo off

set pathStr=%path%
set mingw=%~dp0%bin
set nPath=hello

setlocal enableDelayedExpansion

:Loop
for /f "delims=; tokens=1,*" %%a in ("%pathStr%") do (
  if not "%%a"=="%mingw%" (
    if "!nPath!"=="hello" (
      set nPath="%%a"
    ) else (
      set nPath=%nPath%;"%%a"
    )
  )
  set pathStr=%%b
  goto Loop
)

set nPath=%nPath:"=%
echo %nPath%
setx Path "%nPath%" /m >nul
rem pause>nul