[Batch file] come assegnare data e ora a un nomefile.txt ?

[123delphi321]

echo off
if %time:~0,2% leq 9 (set filedest=%date:~6,4%%date:~3,2%%date:~0,2%_0%time:~1,1%%time:~3,2%%time:~6,2%) else (set filedest=%date:~6,4%%date:~3,2%%date:~0,2%_%time:~0,2%%time:~3,2%%time:~6,2%)
copy noncancellare.txt %filedest%.cnt