Windows 7 Batch File: works under cmd-Windows , NOT under MS-DOS

[Eawedat]

I made these codes to backup files :

set p=C:\Users\
for/f %%a in('dir C:\Users\ /b') do (
if not"%%a"=="Public", (
set fileDest=C:\Backup-%%a_%date:~7,2%.%date:~4,2%.%date:~10,4%
If Not Exist"%fileDest%" mkdir "%fileDest%"set"fullPath=%p%%%a%"
xcopy "%fullPath%"%fileDest%/e /h /y /k
rem call blah.bat
 )
)

When I test it under cmd of Windows 7 , it works great!!

When I try it under MS-DOS(VirtualBOX) it does not

It gives me these errors :

Link Removed

Version of MS-DOS used under VirtualBox is 6.22

any suggestion ?

 

[Josephur]

I don't think 6.22's IF and FOR are as robust..

 

[551280jjj]

CMD is in no way the same as DOS.... CMD allows the use of system tools as DOS is the system, and unable to perform complex functions.