How to Add Date and Time to a Filename with Windows Command Line.

Many times it becomes necessary to append date stamp on your export dumps. In Unix systems, shell scripting is very liberal with variables you can define yourself eg:

expdate=`date ‘+%d%m%Y’`
dat=`date ‘+%m%d%y %H:%M:%S’`

And then go onto define in your script as

./expdp system/system directory=export_dir dumpfile=exp_swx_$expdate.dmp logfile=exp_swx_$expdate.log schemas=swx

But on Windows it can be done in a more easier way, using the Date and Time function. Just input the string below as part of the file name any time you want the current system date and/or time included as part of the file name.
Date:  %date:~4,2%-%date:~7,2%-%date:~12,2%
Time:  %time:~0,2%-%time:~3,2%-%time:~6,2%
Example: copy c:\test.txt c:\test-%date:~4,2%-%date:~7,2%-%date:~12,2%.txt will output c:\test-mm-dd-yy.txt

exp edate/edate file=edate%date:~4,2%-%date:~7,2%-%date:~12,2%.dmp log=edate%date:~4,2%-%date:~7,2%-%date:~12,2%.txt owner=edate statistics=none