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How do I write a batch script to generate folders for each month, day and year based on user input?

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Which parts does the user input, and which parts have to be calculated? – grawity Oct 3 '12 at 17:46
the user input is the year, sorry for not making that clear. So, %INPUT% variable is set to a 4 digit year. For example, if you enter 2012, a folder named 2012 is created and then the month folders are created. Next the MM-DD folders are created inside of each NN-MMM folder. – Richie086 Oct 3 '12 at 17:50
up vote 11 down vote accepted

Handles leap years:

@echo off & setlocal
set year=%1
if "%year%"=="" set /p year=Year? 
if "%year%"=="" goto :eof
set /a mod=year %% 400
if %mod%==0 set leap=1 && goto :mkyear
set /a mod=year %% 100
if %mod%==0 set leap=0 && goto :mkyear
set /a mod=year %% 4
if %mod%==0 set leap=1 && goto :mkyear
set leap=0

call :mkmonth 01 Jan 31
call :mkmonth 02 Feb 28+leap
call :mkmonth 03 Mar 31
call :mkmonth 04 Apr 30
call :mkmonth 05 May 31
call :mkmonth 06 Jun 30
call :mkmonth 07 Jul 31
call :mkmonth 08 Aug 31
call :mkmonth 09 Sep 30
call :mkmonth 10 Oct 31
call :mkmonth 11 Nov 30
call :mkmonth 12 Dec 31
goto :eof

set month=%1
set mname=%2
set /a ndays=%3
for /l %%d in (1,1,9)        do mkdir %year%\%month%-%mname%\%month%-0%%d
for /l %%d in (10,1,%ndays%) do mkdir %year%\%month%-%mname%\%month%-%%d
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Side note: I never quite understood why Windows batch script writers always add a large fancy banner with the script's name, the author's address (and often a misspelled one), and even a pause just to make sure the banner is seen. Scripts are supposed to make things convenient. Having to hit a key every time to skip the banner isn't convenient. – grawity Oct 3 '12 at 18:25
Wow, that is much better than my script! And in reference to the banner, I like letting people know what it is a script is doing rather than just asking What Year?... Thats the only reason why I included it. Thanks for posting your version of this script tho, it gets the same job done with less code. – Richie086 Oct 3 '12 at 20:05

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