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@echo off setlocal enabledelayedexpansion REM 把第十五位修改成0 set "newNum=0" (for /f "tokens=1-2 delims=*" %%i in (a.txt) do ( set "str=%%j" echo %%i*!str:~0,14!%newNum%!str:~15!* ))>b.txt复制代码
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