convert date in batch file

[2009luca]

: need to copy \\Myserverdir\File.txt to C:\mydir\Test_(date_creation).txt

setlocal

:: the following are what I used to test - change to yours!
set folder=\\SynDS214\share
set file=File.txt
set target=D:\Backup

:: get the file's date as dd/mm/yyyy
for /f "tokens=1" %%a in ('dir "%folder%\%file%" ^| find /i "%file%"') do set filedate=%%a

:: change the date to yyyymmdd
set date_created=%filedate:~6,4%%filedate:~3,2%%filedate=~0,2%

:: perform the copy, if the file is not present in the target
if not exist "%target%\Test_(%date_created%).txt" ^
copy "%folder%\%file%" "%target%\Test_(%date_created%).txt"

:: check on the copied file
dir "%target%\Test_(%date_created%).txt"

endlocal

why the conversion od date return 201607 instead 20160712

 

[combo]

Change "=" to ":" in day:
set date_created=%filedate:~6,4%%filedate:~3,2%%filedate:~0,2%

combo