批处理延时启动的几个方法

choice

优点：时间精确，CPU占用低，是最佳选择

    @echo off   
    choice /t 5 /d y /n >nul   
    start gdh.txt  

 

for+set+if，时间精度为0.01秒

缺点：CPU占用高，语句过长，不常用

    @echo off   
      
    setlocal enableextensions   
      
    echo %time%   
    call :ProcDelay 500   
    echo %time%   
    start gdh.txt   
    :ProcDelay delayMSec_   
    setlocal enableextensions   
    for /f "tokens=1-4 delims=:. " %%h in ("%time%") do set start_=%%h%%i%%j%%k   
    :_procwaitloop   
    for /f "tokens=1-4 delims=:. " %%h in ("%time%") do set now_=%%h%%i%%j%%k   
    set /a diff_=%now_%-%start_%   
    if %diff_% LSS %1 goto _procwaitloop   
    endlocal & goto :EOF  

 

ping

缺点:时间精度为1秒,不够精确

    @echo off   
    @ping 127.0.0.1 -n 6 >nul   
    start gdh.txt  

 

vbs start /wait

缺点：生成临时文件

有点：时间精度为0.001秒，精度高

    @echo off   
      
    echo wscript.sleep 5000>sleep.vbs   
      
    start /wait sleep.vbs   
      
    start gdh.txt   
      
    del /f /s /q sleep.vbs  

 

vbs cscript

    @echo off   
    echo wscript.sleep 5000>sleep.vbs   
    @cscript sleep.vbs >nul   
    start gdh.txt   
    del /f /s /q sleep.vbs