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Powershell - Query AD for Servers

The following Script stub will query AD for all active Windows 2008 Servers (can be tweaked) and create a collection of those servers. # ###################################################################### # - Section for gathering Windows Server Information ... # -- Define Global Variables --   $strCategory = "computer"   $strOS = "*2008*"     # -- Get AD information --   $objDomain = New-Object System.DirectoryServices.DirectoryEntry     $objSearcher = New-Object System.DirectoryServices.DirectorySearcher   $objSearcher.SearchRoot = $objDomain   $objSearcher.Filter = "(&(objectCategory=$strCategory)(operatingSystem=$strOS)(name=*)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))"     # - define Attributes to find -   $colProplist = "name"   foreach ($i in $colPropList){$return=$objSearcher.PropertiesToLoad.Add($i)}     # - Find all Computers that fit the Search profile   $colResults = $objSearcher.F...
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Powershell Arrays

1) How do I create a dynamic array $a = @() 2) How do I append an element to array $a += "a" $a += "b" 3) how do I do a UBOUND on an array .NET array indexes are zero-based, so ubound is length-1: $a.length - 1
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Powershell - Using IE

Have successfully using Powershell to access IE. Trick to be aware of. If you launch a web page using "New-Object -comObject InternetExplorer.Application", UAC will block you from accessing the document properties inside. Use the following technique:    & "$env:programfiles\Internet   Explorer\iexplore.exe" 'http://powershell.com'   $win = New-Object -comObject Shell.Application   $try = 0   $ie2 = $null   do {     Start-Sleep -milliseconds 500     $ie2 = @($win.windows() ? { $_.locationName -like '*PowerShell*' })[0]     $try ++     if ($try -gt 20) {       Throw "Web Page cannot be opened."     }   } while ($ie2 -eq $null)   $ie2.document   $ie2.Document.body.innerHTML
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Dunning-Kruger effect

An interesting read. "The unskilled suffer from illusory superiority, rating their ability as above average, much higher than it actually is, while the highly skilled underrate their own abilities, suffering from illusory inferiority." http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect Another humorous way of saying this is that if you are an optimist, then you don't have all of the information.
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CSVDE Command Syntax

I learned today how to query AD from the command line to list only active servers. The filter includes the conditions "not disabled" and also "not an EMC Celerra" csvde -f output.csv -r "(&(objectClass=computer)(!(userAccountControl=4098))(&(operatingSystem=*server*)(!(operatingSystem=EMC Celerra *))))" -l displayName,operatingSystem,operatingSystemVersion,operatingSystemServicePack,name,cn,dNSHostName
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