Get-OSInstallDate.ps1

1. <# 
2. .SYNOPSIS 
3.     This script gets/displays the Sysgtem Uptime after 
4.     converting it from WEBM time/date format  
5. .DESCRIPTION 
6.     This script creates an instance of a SWbemDateTime object,  
7.     gets the OS install date and converts the date to a more 
8.     useful format. 
9. .NOTES 
10.     File Name  : Get-OSInstallDate.ps1 
11.     Author     : Thomas Lee - tfl@psp.co.uk 
12.     Requires   : PowerShell Version 2.0 
13. .LINK 
14.     This script posted to: 
15.         http://www.pshscripts.blogspot.com 
16.     MSDN sample posted to: 
17.         http://msdn.microsoft.com/en-us/library/aa393687%28VS.85%29.aspx 
18. .EXAMPLE 
19.     Psh [C:\foo]> .\Get-OsInstallDate.ps1 
20.     This OS was installed in the year 2008 
21.     Full installation date (VT_DATE format) is 4/9/2008 8:17:23 PM 
22.     Full installation date (FILETIME format) is 128522458430000000 
23.  
24. #> 
25.  
26. # Create swbemdatetime object 
27. $datetime = New-Object -ComObject WbemScripting.SWbemDateTime 
28.  
29. #  Get OS installation time and assign to datetime object 
30. $os = Get-WmiObject -Class Win32_OperatingSystem 
31. $dateTime.Value = $os.InstallDate 
32.  
33. # Now display the time 
34. "This OS was installed in the year {0}"           -f $dateTime.Year 
35. "Full installation date (VT_DATE format) is {0}"  -f $dateTime.GetVarDate() 
36. "Full installation date (FILETIME format) is {0}" -f $dateTime.GetFileTime()  
37. ## 

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