how to set date to current date using dos batch file command

Question

how to set date to current date using dos batch file command.

Answer 1

If you need to use the current date in a batch file, the variable %date% has the current date:

echo %date%
23/02/2010

It uses the format of the regional setting of your computer. In my computer it's dd/mm/yyyy.

Since the / can't be part of a file name, they must be replaced with a safe character or nothing:

echo %date:/=-%
23-02-2010

echo %date:/=%
23022010

If you want to create a backup copy of a file, you can do something like:

copy file.txt file-%date:/=%.txt
dir /b file*.*
file-23022010.txt
file.txt

Or first set it to a variable and then use it:

set currdate=%date:/=%
copy file.txt file-%currdate%.txt