@echo off
 setlocal enabledelayedexpansion
for /f "tokens=1,2 delims=:" %%i in ('time/t') do (
set xian=%%i%%j & set xianshi=%%i & set xianfen=%%j
for /f "skip=1 tokens=10,11 delims=-: " %%a in ('query user') do (
set chu=%%a%%b & set chushi=%%a & set chufen=%%b
)
)
rem endlocal
set /a xianshi=1%xianshi%-100,xianfen=1%xianfen%-100
for /f "skip=1 tokens=6,7,8 delims=- " %%u in ('query user') do (
for /f "tokens=1,2,3 delims=- " %%r in ('date/t') do (
SET DateA=%%u%%v%%w & set DateB=%%r%%s%%t
echo !DateA! !dateb!
)
) 
call :DateToDays %DateA:~0,4% %DateA:~4,2% %DateA:~6,2% DaysX
call :DateToDays %DateB:~0,4% %DateB:~4,2% %DateB:~6,2% DaysY
if %DaysX% geq %DaysY% (set /a DayZ=DaysX-DaysY) else (set /a DayZ=DaysY-DaysX)
echo %DateA%和%DateB%间隔的天数是：%DayZ%天
if %xianshi% geq %chushi% (if %xianfen% geq %chufen% set /a fen=%xianfen%-%chufen% & set /a shi=%xianshi%-%chushi% )else (
if %xianfen% geq %chufen% (set /a fen=xianfen-chufen,shi=24-chushi+xianshi-24) else (set /a fen=60+xianfen-chufen,shi=24-chushi+xianshi-24-1)
)
set /a zongshi=DayZ*24+shi
echo 合计%zongshi%小时%fen%分钟
goto :eof
 
:DateToDays %yy% %mm% %dd% days
setlocal ENABLEEXTENSIONS
set yy=%1&set mm=%2&set dd=%3
if 1%yy% LSS 200 if 1%yy% LSS 170 (set yy=20%yy%) else (set yy=19%yy%)
set /a dd=100%dd%%%100,mm=100%mm%%%100
set /a z=14-mm,z/=12,y=yy+4800-z,m=mm+12*z-3,j=153*m+2
set /a j=j/5+dd+y*365+y/4-y/100+y/400-2472633
endlocal&set %4=%j%&goto :EOF
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@echo off
rem 建议保存为ANSI编码格式
for /f "tokens=1-2 delims=: " %%a in ('powershell "(get-date) - (gcim Win32_OperatingSystem).LastBootUpTime"') do set "%%a=%%b"
echo;系统运行时长为：%Days%天%Hours%时%Minutes%分%Seconds%.%Milliseconds%秒
pause>unl
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以零为除数的错误。
 天时分
找不到操作数。
合计时分
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