Compare 2 dates in a Windows batch file

How is it possible to compare 2 dates in batch files?
This:

if %%newdate geq %olddate% _do smth_
does not work.

In this case I have that<br> `27.05.2013` is _greater than_ `15.07.2013` and<br> `14.07.2013` is _less than_ `15.07.2013`

Zhenya

call :date_to_number %date1% date1
call :date_to_number %date2% date2

if %date1% GEQ %date2% echo date1 is bigger

goto :eof
:date_to_number
setlocal
if "%~1" EQU "" goto :eof
for /f "tokens=1,2,3 delims=." %%D in ("%~1") do (
set "the_date=%%F%%E%%D"
)
endlocal & if "%~2" neq "" (set %~2=%the_date%) else echo %the_date%
goto :eof

But this will work only with dates in format DD.MM.YYYY

try this:

set "sdate1=%olddate:~-4%%olddate:~3,2%%olddate:~0,2%"
set "sdate2=%newdate:~-4%%newdate:~3,2%%newdate:~0,2%"
if %sdate1% GTR %sdate2% (goto there) else echo here

I had an issue where I wanted to find users who's passwords had expired, or were about to expire.

So for starters, Windows 10 has changed the format of the %date% variable so it looks different than previous versions. therefore, the output of "echo %date%" looks like:
"Thu 05/09/19"
so I use this one liner to take today's date and convert it to yyyymmdd format.

set today=20%date:~-2%%date:~4,2%%date:~7,2%

(today = 20190509)

this is easy because we know that there is exactly 2 digits for each month and day.

Now, if the "date format" that you are working from does not pad the single digit months and days with a preceding zero, you will have to to pad them yourself.
For example, the output of the command: net user %username% /domain looks like "5/9/19", note the missing zeros...

So you can extract this a couple different ways. the simplest way is to grab each field seperately, drop a zero in front of the month and day variables, and then grab only the last two digits of them.
that way 5 becomes 05, and 12 becomes 012, and then goes back to 12.

for /f "tokens=3-5 delims=/ " %%a in ('net user %username% /domain ^|find /i "Password expires"') do (
set mm=0%%a& set dd=0%%b& set yyyy=20%%c
set expires=!yyyy!!mm:~-2!!dd:~-2!
if NOT !expires! GTR %today% echo Password has expired and needs to be changed.

I create a simple c program i call newest.exe. Below is the source code.

#include <stdio.h>
#include <sys/stat.h>
#include <time.h>

// syntax: newest file1 file2
//
// if age1 = age2, prints 0 age1 age2
// if age1 < age2, prints 1 age1 age2
// if age1 > age2, prints 2 age1 age2
// where
// age1 is age of file1 is seconds.
// age2 is age of file2 is seconds.
//
// To capture the output in a DOS bat file use:
// for /f "tokens=1-3" %%i in ('%srcPath%\newest.exe %src% %des%') do (
// set newest=%%i
// set age1=%%j
// set age2=%%k
// )


int main(int argc, char **argv)
{
struct stat fileStat;
time_t now;
long age1, age2;

if(argc != 3)
{
printf("syntax: %s File1 File2\n", argv[0]);
return 1;
}

now = time(NULL);

if(stat(argv[1],&fileStat) < 0) return 1;
age1 = now - fileStat.st_mtime;

if(stat(argv[2],&fileStat) < 0) return 1;
age2 = now - fileStat.st_mtime;

if( age1 == age2 )
printf("0 %d %ld\n", age1, age2);
else if( age1 < age2 )
printf("1 %d %ld\n", age1, age2);
else
printf("2 %d %ld\n", age1, age2);

return 0;
}

You should always use the ISO format for dates (yyyy-MM-dd HH:mm:ss). This makes it unambiguous, locale agnostic, they sort chronologically and you can easily compare them as strings in CMD files.

For /F "tokens=1,2 delims==" %%i in ('wmic os get LocalDateTime /VALUE') do (if .%%i EQU .LocalDateTime set ldt=%%j)
set CURRENT_DATE=%ldt:~0,4%-%ldt:~4,2%-%ldt:~6,2%
set CURRENT_TIME=%ldt:~8,2%:%ldt:~10,2%:%ldt:~12,2%

This will give you:

CURRENT_DATE in yyyy-MM-dd format
CURRENT_TIME in HH:mm:ss format