Every current Windows version features the
FILEVER command to read files' file and product version:
Prints file version information. filever [/S] [/V] [/E] [/X] [/B] [/A] [/D] [[drive:][path][filename]] /S Displays files in specified directory and all subdirectories. /V List verbose version information if available. /E List executables only. /X Displays short names generated for non-8dot3 file names. /B Uses bare format (no dir listing). /A Don't display file attributes. /D Don't display file date and time.
/V switch reveals lots of file details:
D:\>filever /v %windir%\system32\cacls.exe
--a-- W32i APP ENU 6.1.7600.16385 shp 25,600 07-14-2009 cacls.exe Language 0x0409 (English (United States)) CharSet 0x04b0 Unicode OleSelfRegister Disabled CompanyName Microsoft Corporation FileDescription Control ACLs Program InternalName cacls OriginalFilenam CACLS.EXE ProductName Microsoft™ Windows™ Operating System ProductVersion 6.1.7600.16385 FileVersion 6.1.7600.16385 (win7_rtm.090713-1255) LegalCopyright © Microsoft Corporation. All rights reserved. VS_FIXEDFILEINFO: Signature: feef04bd Struc Ver: 00010000 FileVer: 00060001:1db04001 (6.1:7600.16385) ProdVer: 00060001:1db04001 (6.1:7600.16385) FlagMask: 0000003f Flags: 00000000 OS: 00040004 NT Win32 FileType: 00000001 App SubType: 00000000 FileDate: 00000000:00000000 D:\>
To extract the product version we can use a FOR /F loop:
FOR /F "tokens=2" %%A IN ('FILEVER /V %windir%\System32\cacls.exe ^" FIND "ProductVersion"') DO SET ProductVersion=%%A
Note, however, that the term
ProductVersion is language dependent, i.e. you have to adapt
FIND's search string to the OS language.
If you cannot be sure about the OS language, your safest bet is to use the file version:
FOR /F "tokens=5" %%A IN ('FILEVER %windir%\system32\cacls.exe') DO SET FileVersion=%%A
Note that we did not use the
/V switch, nor did we need
To compare two versions, we cannot just use
IF version1 GTR version2 because that would only work on integers; if the versions compared contain dots, the
IF statement performs a string comparison, making "9.10" greater than "10.9".
We have to compare the versions one digit at a time, until a difference is found.
I wrote CompareVersions.bat to perform a proper comparison, digit by digit.
It required quite a lot of code to accomplish this, mainly because leading zeroes may make an
IF version1_digit_n GTR version2_digit_n test err or even crash.
|page last uploaded: 2017-02-28, 23:45|