echo 潜水好长时间。学习了不少东东。感谢批处理之家这个网站！
echo s:shutdown compute   r:restart computer
set /p choice=choice: 
if "%choice%"=="s" goto begin
if "%choice%"=="r" goto begin
goto :eof
: begin
set /p delay=delayed minutes:
echo delayed minutes: %delay% >time.txt
set /a delay=%delay%
set totaltime=0
set nowtime=%time%
echo start time:%nowtime% >>time.txt
:delay_continue
set /a minute1=%nowtime:~3,2%
set nowtime=%time%
set /a minute2=%nowtime:~3,2%
if %minute2% geq %minute1% (set /a totaltime+=%minute2%-%minute1%
if %totaltime% lss %delay% goto delay_continue) else (
set /a totaltime=%totaltime%+1
if %totaltime% lss %delay% goto delay_continue)
echo end time:%time% >>time.txt
echo Prepare to shut down your computer *************
shutdown -%choice% -f -t 30
goto :eof
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