ping -n 20 127.0>nul 是为了延时一会儿,等待时间修改过来。

@echo off
@time 00:00:00
ping -n 20 127.0>nul

:Again
cd C:\\
    if %time:~0,2% leq 4   (
        call loop-Linpack.bat,
        goto Again
        ) else (
            if %time:~0,2% leq 8  (
                call loop-sevenZip.bat,
                goto Again
                ) else (
            if %time:~0,2% leq 12  (
                call loop-mPrime.bat,
                goto Again
                ) else (
            if %time:~0,2% leq 16  (
                call loop-stream.bat,
                goto Again
                ) else (
            if %time:~0,2% leq 20  (
                call loop-gups.bat,
                goto Again
                ) else (
                call loop-Crashme.bat,
                goto Again
                )
            )
        )
    )
)

~