Friday, April 27, 2012

VBScript to Determine 32-bit or 64-bit machine

Often we come across a situation where we need to see the Operating system bit information and then install application or do any customization. Here is a script which I use for this purpose:


Const HKEY_LOCAL_MACHINE = &H80000002
'Lines to get the computer Name

Set wshShell = WScript.CreateObject( "WScript.Shell" )
strComputerName = wshShell.ExpandEnvironmentStrings( "%COMPUTERNAME%" )

'To check whether the OS is 32 bit or 64 bit of Windows 7

'Lines to detect whether the OS is 32 bit or 64 bit of Windows 7

Set oReg=GetObject("winmgmts:{impersonationLevel=impersonate}!\\" & strComputerName & "\root\default:StdRegProv")

  strKeyPath = "HARDWARE\DESCRIPTION\System\CentralProcessor\0"

  strValueName = "Identifier"

oReg.GetStringValue HKEY_LOCAL_MACHINE,strKeyPath,strValueName,strValue

'Checking Condition whether the build is 64bit or 32 bit

  if (instr(strValue,"64")) then

'Perform functions for 64-bit OS.
End If

if (instr(strValue,"x86")) then

'Perform functions for 32-bit OS
 End If

Thursday, April 19, 2012

VBScript to determine Root Drive

As per best practices we should not hard code the Root Drive in our package. If your package goes to multiple machines having different Root Drives, then you can use this simple VBScript in your package as Custom Action and it will set the Root Drive automatically for that machine.
This script picks up the Root Drive from where Program Files folder is installed.

Set oshell=CreateObject("")
dletter=vletter(0) & ":\""ROOTDRIVE")=dletter

Wednesday, April 11, 2012

Installation and Uninstallation of MSU in silent mode

MSU are the Microsoft Update files.
You can easily install the MSU file silently without reboot with the following command line:

wusa.exe Windows6.1-KB123456-x86.msu /quiet /norestart

To Uninstall it Silently you need to follow this simple procedure:

1) Run this command:
expand c:\temp\Windows6.0-KB123456-x86.msu –F:Windows6.0-KB123456-x86.xml c:\temp

2) This will create an XML file in temp folder as per the name above.
Edit this xml in notepad.

3)Find the assemblyidentity tag. Then, note the values of the following attributes:
  • The name attribute
  • The publickeytoken attribute
  • The processArchitecture attribute
  • The version attribute
4) Use the below command to uninstall the MSU from your machine.
start /w pkgmgr /up:name~publickeytoken~processArchitecture~~version

Note: The variables above need to be replaced by the vaules you have copied in step 3.

Wednesday, April 04, 2012

VBScript to copy file and Powershell Script to copy file

VBScript to copy file:

dim filesys, oShell
Set filesys = CreateObject("Scripting.FileSystemObject")
Set oShell = CreateObject("WScript.Shell")
sup = oShell.ExpandEnvironmentStrings ("%APPDATA%")
des = oShell.ExpandEnvironmentStrings ("%ProgramFiles(x86)%")
destfile= sup & "\AR System\HOME\AR"
sourcefile= des & "\AR System\User\AR"
If filesys.FileExists(sourcefile) Then
   filesys.CopyFile sourcefile, destfile
End If

Powershell Script to copy file:

$SourceFile = "c:\foo\Test.txt"; 
$NewFile    = "c:\foo\Test2.txt"; 
# Now - check to see if $Sourcefile exists, and if so, 
# copy it to $newfile  
if ([System.IO.File]::Exists($SourceFile))  { 
   [System.IO.File]::Copy($SourceFile, $NewFile) 
   "Source File ($SourceFile) copied to ($newFile)" 

else { 
"Source file ($Sourcefile) does not exist."