WHY

@echo off
setlocal enabledelayedexpansion
for /L %%g in (1,1,50) do (
    set /a n2 = %%g * 10, n1 = n2 - 9
    (for /L %%i in (!n1!,1,!n2!) do (
        type "D:\KZ1\%%i.txt"
    )) > "D:\KZ2\%%g.txt"
)
pause
复制代码