How can I determine the (ISO 8601) week number in a Windows batch file?
Unfortunately WMIC PATH WIN32_LOCALTIME GET /FORMAT:LIST only has WeekInMonth...
I have found some very complex solutions. Is there no easier way?
You can use Ritchie Lawrences's Date Functions. It is maintained on Gitub. https://ritchielawrence.github.io/batchfunctionlibrary/
Here is the code.
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:DateToWeek %yy% %mm% %dd% yn cw dw
::
:: By: Ritchie Lawrence, Updated 2002-11-20. Version 1.1
::
:: Func: Returns an ISO 8601 Week date from a calendar date.
:: For NT4/2000/XP/2003.
::
:: Args: %1 year component to be converted, 2 or 4 digits (by val)
:: %2 month component to be converted, leading zero ok (by val)
:: %3 day of month to be converted, leading zero ok (by val)
:: %4 var to receive year, 4 digits (by ref)
:: %5 var to receive calendar week, 2 digits, 01 to 53 (by ref)
:: %6 var to receive day of week, 1 digit, 1 to 7 (by ref)
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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,Jd=153*m+2
set /a Jd=Jd/5+dd+y*365+y/4-y/100+y/400-32045
set /a y=yy+4798,Jp=y*365+y/4-y/100+y/400-31738,t=Jp+3,Jp=t-t%%7
set /a y=yy+4799,Jt=y*365+y/4-y/100+y/400-31738,t=Jt+3,Jt=t-t%%7
set /a y=yy+4800,Jn=y*365+y/4-y/100+y/400-31738,t=Jn+3,Jn=t-t%%7
set /a Jr=%Jp%,yn=yy-1,yn+=Jd/Jt,yn+=Jd/Jn
if %Jd% GEQ %Jn% (set /a Jr=%Jn%) else (if %Jd% GEQ %Jt% set /a Jr=%Jt%)
set /a diff=Jd-Jr,cw=diff/7+1,wd=diff%%7,wd+=1
if %cw% LSS 10 set cw=0%cw%
endlocal&set %4=%yn%&set %5=%cw%&set %6=%wd%&goto :EOF
There is no native Windows command available to CMD that can easily provide the ISO 8601 week number. In fact, dealing with date and time in any fashion is a real pain.
That is why I wrote getTimestamp.bat - a general purpose utility for doing date/time computations and formatting. It is pure script (hybrid batch/JScript) that runs natively on any Windows machine from XP onward - no 3rd party exe required.
Full documentation is available from the command line by getTimestamp /?, or getTimestamp /?? if you want paged help.
The following will print the ISO 8601 week number using local date and time:
call getTimeStamp /f {isowk}
You can easily store the result in a variable
call getTimeStamp /f {isowk} /r week
echo ISO 8601 week = %week%
Try this in a batch file:
@For /F %%I In ('PowerShell Get-Date -UFormat %%V') Do @Echo(%%I
@Timeout -1
or in the command prompt window:
For /F %I In ('PowerShell Get-Date -UFormat %V') Do @Echo(%I
来源：https://stackoverflow.com/questions/39374549/iso-week-number-in-cmd