-=> Sean Dennis wrote to All on 04-07-17 20:26 <=-


 SD> I finally figured out what I was doing wrong with the Micronet
 SD> nodelist/infopack bash script.

 SD> So what I had to do was get the current day number of the current year:
 SD> DOY=$(date +%j)

 SD> Then, I had to get the last two digits of the day number:
 SD> DOY1=`echo "${DOY-2)}"`
 SD> (the backticks tell bash to run this as a command and store the output
 SD> in the variable)

 SD> Here's where I screwed up.  I didn't perform the correct arithmetic
 SD> (sp?) on the variable.  This is what I wound up doing to get the last
 SD> Friday's DOY: OLDDOY=`echo $((DOY1 - 8 ))`

 SD> Seems bash is like REXX in that no variable is typed and treated as a
 SD> string unless you tell it otherwise.

 SD> That seemed to have fixed the problem.

You think your's is tough... lool what I ahd to go through to get a sindoze
version to get the day ordinal #... 

Spent a few sleepless nights on this one.. lol!!



@echo & setlocal enableextensions disabledelayedexpansion

set year=%date:~-4,4%

set day=%date:~-7,2% 
if "%day:~0,1%"=="0" set day=%day:~1%

set month=%date:~-10,2%
if "%month:~0,1%"=="0" set month=%month:~1%

echo Today's Date: %day%%month% %year% 

:: Call the day ordinal number subroutine
 
call :JDdayNumber %day%%month% %year% DayOrdinalNumber

:: Display the result

if DayOrdinalNumber LSS 100 set DayOrdinalNumber=0%DayOrdinalNumber% 


set zipday=z%DayOrdinalNumber:~-2,3%


echo "%day%%month% %year% Day ordinal number: 0%DayOrdinalNumber% (%zipday%)"



endlocal & goto :EOF
::
:: ============================================================
:: Subroutine: Calculate a day's ordinal number within the year

@echo

:JDdayNumber dm y return_
   setlocal enableextensions enabledelayedexpansion
   if %2 LEQ 2 (
     set /a a=%3-1
     set /a b=!a!/4-!a!/100+!a!/400
     set /a c=^(!a!-1^)/4-^(!a!-1^)/100+^(!a!-1^)/400
     set /a s=!b!-!c!
     set /a e=0
     set /a f=%1-1+31*^(%2-1^)
     ) else (
     set /a a=%3
     set /a b=!a!/4-!a!/100+!a!/400
     set /a c=^(!a!-1^)/4-^(!a!-1^)/100+^(!a!-1^)/400
     set /a s=!b!-!c!
     set /a e=!s!+1
     set /a f=%1+^(153*^(%2-3^)+2^)/5+58+!s!
     )
   set /a return_=!f!+1
   endlocal & set "%4=%return_%" & goto :EOF


--

Bill

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