【批处理Bat】批处理、Bat每隔多少行执行什么

批处理、Bat 每隔多少行执行什么：

setlocal enabledelayedexpansion
for /f "delims=" %%a in (445.txt) do (
        set /a num+=1
        if !num! equ 10 (echo asd>>roserose.bat&set "num=0") else (echo cmd.exe /c call start %%a.bat>>roserose.bat)
)

setlocal enabledelayedexpansion
FOR /F "tokens=1,2,3 delims= " %%i in (log/rae.txt) do (
        set /a num+=1
        if !num! equ 10 (pause&set "num=0") else (start sqlcmd.exe %%i %%j %%k ftp.txt)
)