批处理bat计算上个月最后一天的日期
【方案一】BAT+date.exe(GNU)
@echooff
rem调用GNUforWin32的date.exe
set"gnuDate=C:/test/date.exe"
for/f%%ain('%gnuDate%"+%%Y%%m01"')do(
for/f%%hin('%gnuDate%-d"%%a1daysago""+%%Y-%%m-%%d"')do(
set"DstDate=%%h"
)
)
echo,%DstDate%
pause
【方案二】BAT+VBS
@echooff
>"%temp%/DateCalculate.vbs"echostrLastDate=DateAdd("d",-DatePart("d",Date),Date)
>>"%temp%/DateCalculate.vbs"echostrFmtDate=Right(Year(strLastDate),4)^&Right("0"^&Month(strLastDate),2)^&Right("0"^&Day(strLastDate),2)
>>"%temp%/DateCalculate.vbs"echoWScript.EchostrFmtDate
for/f%%ain('cscript/nologo"%temp%/DateCalculate.vbs"')do(
set"DstDate=%%a"
)
setDstDate=%DstDate:~0,4%-%DstDate:~4,2%-%DstDate:~6,2%
echo,%DstDate%
pause
【方案三】BAT
@echooff setlocalenabledelayedexpansion rem假设系统日期格式为yyyy-mm-dd set"y=%date:~0,4%" set"m=%date:~5,2%" set/a"m=1!m!-101,m=m+(^!m)*12" rem上月是否2月或小月 set/a"f=^!(m-2),s=^!(m-4)|^!(m-6)|^!(m-9)|^!(m-11)" rem今年是否闰年 set/a"leap=^!(y%%4)&^!^!(y%%100)|^!(y%%400)" rem上月有!d!天 set/a"d=f*(28+leap)+s*30+(^!f&^!s)*31" set/a"y1=y-^!(m-12)" set"m=0!m!" set"m=!m:~-2!" set"d=0!d!" set"d=!d:~-2!" setDstDate=!y1!-!m!-!d! echo,%DstDate% pause
【方案四】BAT+RitchieLawrence日期函数
@echooff rem假设系统日期格式为yyyy-mm-dd setThisYear=%date:~0,4% setThisMonth=%date:~5,2% call:DateToDays%ThisYear%%ThisMonth%01ThisDays set/aDstDays=%ThisDays%-1 call:DaysToDate%DstDays%DstYearDstMonthDstDay setDstDate=%DstYear%-%DstMonth%-%DstDay% echo,%DstDate% pause goto:eof
:DateToDays%yy%%mm%%dd%days setlocalENABLEEXTENSIONS setyy=%1&setmm=%2&setdd=%3 if1%yy%LSS200if1%yy%LSS170(setyy=20%yy%)else(setyy=19%yy%) set/add=100%dd%%%100,mm=100%mm%%%100 set/az=14-mm,z/=12,y=yy+4800-z,m=mm+12*z-3,j=153*m+2 set/aj=j/5+dd+y*365+y/4-y/100+y/400-2472633 endlocal&set%4=%j%&goto:EOF
:DaysToDate%days%yymmdd setlocalENABLEEXTENSIONS set/aa=%1+2472632,b=4*a+3,b/=146097,c=-b*146097,c/=4,c+=a set/ad=4*c+3,d/=1461,e=-1461*d,e/=4,e+=c,m=5*e+2,m/=153,dd=153*m+2,dd/=5 set/add=-dd+e+1,mm=-m/10,mm*=12,mm+=m+3,yy=b*100+d-4800+m/10 (if%mm%LSS10setmm=0%mm%)&(if%dd%LSS10setdd=0%dd%) endlocal&set%2=%yy%&set%3=%mm%&set%4=%dd%&goto:EOF