批处理延时启动的几个方法

 

方法一：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

 

方法二：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

 

方法三：vbs cscript

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

 

方法四：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

 

方法五：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

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