Just a simple inventory script. This script does NOT query the WMI Installed_Product table, which an be quite time and CPU consuming. Instead, my script queries the Uninstall-Registry key to generate the list of installed apps which makes it lot faster:

' #####################################################################
' ##
' ## (C) 2010 Michael Miklis (michaelmiklis.de)
' ##
' ## 
' ## Filename:      GetInstalledApplications.vbs
' ##
' ## Version:	    1.0
' ##
' ## Release:	    Final 
' ##
' ## Requirements:  -none-
' ## 
' ## Description:   List installed applications based on uninstall key
' ##
' ## This script is provided 'AS-IS'.  The author does not provide 
' ## any guarantee or warranty, stated or implied.  Use at your own 
' ## risk. You are free to reproduce, copy & modify the code, but 
' ## please give the author credit. 
' ##
' ####################################################################
Option Explicit


wscript.echo GetInstalledApplications


'______________________FUNCTIONS & SUB ROUTINES_______________________

Function GetInstalledApplications
	'// <summary> 
	'// List installed applications
	'// </summary>
	'// <param name="strComputername">Computername</param>
 
	Const HKLM = &H80000002		'HKEY_LOCAL_MACHINE

	Dim objREG			'Registry Object
	Dim strBaseKey			'Uninstall Key
	Dim intRet			'Return Code
	Dim arSubKeys			'Reg-Key Array
	Dim strKey			'Reg-Key Element
	Dim strValue			'Reg-Value

	Set objREG = GetObject("winmgmts:{impersonationLevel=impersonate}!./root/default:StdRegProv")
	strBaseKey = "SOFTWAREMicrosoftWindowsCurrentVersionUninstall"

	intRet = objREG.EnumKey(HKLM, strBaseKey, arSubKeys)

	For Each strKey In arSubKeys
		intRet = objREG.GetStringValue(HKLM, strBaseKey & strKey, "DisplayName", strValue)

		If intRet <> 0 Then
			objREG.GetStringValue HKLM, strBaseKey & strKey, "QuietDisplayName", strValue
		End If

		If strValue <> "" Then
			GetInstalledApplications = GetInstalledApplications & strValue & vbCrLf
		End If
	Next
End Function

This is definitely my most used VBScript function ever. Just specify a directory a you’ll receive a complete directory listing recursively.

' #####################################################################
' ##
' ## (C) 2005 Michael Miklis (michaelmiklis.de)
' ##
' ## 
' ## Filename:      ListFilesRecursive.vbs
' ##
' ## Version:	    1.0
' ##
' ## Release:	    Final 
' ##
' ## Requirements:  -none-
' ## 
' ## Description:   Creates a List of files and folders
' ##
' ## This script is provided 'AS-IS'.  The author does not provide 
' ## any guarantee or warranty, stated or implied.  Use at your own 
' ## risk. You are free to reproduce, copy & modify the code, but 
' ## please give the author credit. 
' ##
' ####################################################################
Option Explicit

Dim objFS

Set objFS = CreateObject ("Scripting.FileSystemObject")

wscript.echo CreateFileList(objFS.GetFolder("C:\Users\michael\desktop"), True)

Set objFS = Nothing

'______________________FUNCTIONS & SUB ROUTINES_______________________

Function CreateFileList(objFolder, bRecursive)
	'// <summary> 
	'// 	Creates a List containing all Files
	'// </summary> 
	'// <param name="objFolder">Root-Folder for searching</param> 	
	'// <param name="bRecursive">Search recursive</param>
	Dim objFile, objSubFolder

        For each objFile in objFolder.Files
        	CreateFileList = CreateFileList & objFile.Path & vbCr
	Next

	If bRecursive = true then
		For each objSubFolder in objFolder.Subfolders
			CreateFileList = CreateFileList & CreateFileList(objSubFolder, true)
	        Next
	End If
End Function

Just another useful function using the Windows Management Infractstructre (WMI) for doing a ICMP Ping. I’ve used this function on all my network related scripts to verify a host is available on the network.

' #####################################################################
' ##
' ## (C) 2009 Michael Miklis (michaelmiklis.de)
' ##
' ## 
' ## Filename:      Ping.vbs
' ##
' ## Version:	    1.0
' ##
' ## Release:	    Final 
' ##
' ## Requirements:  -none-
' ## 
' ## Description:   Pings a network host or device
' ##
' ## This script is provided 'AS-IS'.  The author does not provide 
' ## any guarantee or warranty, stated or implied.  Use at your own 
' ## risk. You are free to reproduce, copy & modify the code, but 
' ## please give the author credit. 
' ##
' ####################################################################
Option Explicit

If Ping("www.google.com") = true then
	wscript.echo "alive"
End If

'______________________FUNCTIONS & SUB ROUTINES_______________________

Function Ping(strHost)
	'// <summary> 
	'// Well Known Ping command
	'// </summary>
	'// <param name="strHost">Name or IP-Address</param>


	Dim objPing			'WMI Ping Object
	Dim objStatus			'PingStatus Object

	Ping = false

	Set objPing = GetObject("winmgmts:{impersonationLevel=impersonate}")._
	ExecQuery("SELECT * FROM Win32_PingStatus where address = '" & strHost & "'")

	'// Query Win32_PingStatus.StatusCode -> 0 = reachable
	For each objStatus in objPing
		If objStatus.StatusCode = 0 then
			Ping = true
			Exit Function
		End If
	Next
End Function