Verify OS Version in Windows System by command line

ver | find "XP" > nul
if %ERRORLEVEL%==0 goto _XP

:_XP 
   echo "this is XP" 
   goto end

: NONXP
   echo "this is not XP"

: end


Line 1:  ver  displays version 

       win7 case -->  Microsoft Windows [Version 6.1.7601]
       winxp case  -->Microsoft Windows XP [Version 5.1.2600]

Line 2:  dedepends of result,   do somthing,.