2008-08-24Timestamp YYYY-MM-DDTHHMMSS in einer Windows Shell

To get a correctly formatted timestamp within a Window batchfile (CMD, BAT), you do have to overcome a little problem.+ The environment variable %TIME% does show hours before 10am with a leading space (allthoug %DATE% does show days < 10 with a leading zero.
To get a valid timestamp (e.g. for naming logfiles) a batchfile has to check for this special case.

here you find an example code:

set DATUM_FORMATIERT=%DATE:~10,4%-%DATE:~4,2%-%DATE:~7,2%
 
set NOW=%TIME%
set VORNULL=NEIN
if "! !"=="!%NOW:~0,1%!" set VORNULL=0
if %VORNULL%==0 set STUNDE=0%NOW:~1,1%
if not %VORNULL%==0 set STUNDE=%NOW:~0,2%
set UHRZEIT_HHMMSS=%STUNDE%%NOW:~3,2%%NOW:~6,2%
 
set TIMESTAMP=%DATUM_FORMATIERT%T%UHRZEIT_HHMMSS%