用指定字符串替换指定内容

@echo off 
setlocal enabledelayedexpansion set file= set /p file= 请输入要操作的文件名称(包括扩展名)： 
set "file=%file:"=%" for %%i in ("%file%") do set file=%%~fi echo. 
set replaced= set /p replaced= 请输入即将被替换的内容： echo. set all= 
set /p all= 请输入替换字符串： for /f "delims=" %%i in ('type "%file%"') do ( 
set str=%%i set "str=!str:%replaced%=%all%!" 
echo !str!>>"%file%"_tmp.txt ) 
copy "%file%" "%file%"_bak.txt >nul 2>nul 
move "%file%"_tmp.txt "%file%" start "" "%file%"