FindDuplicateEmployeeIDs.ps1
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Script
<#
This script will find duplicate employeeID values and export them
to a CSV file.
Syntax examples:
To process all users:
UpdatingEmployeeID.ps1
To process all users from a particular OU structure:
UpdatingEmployeeID.ps1 -SearchBase "OU=Users,OU=Corp,DC=mydemosthatrock,DC=com" -ReferenceFile "c:\MyOutput.csv"
You must use quotes around the SearchBase parameter otherwise the
comma will be replaced with a space. This is because the comma is a
special symbol in PowerShell.
Release 1.0
Written by [email protected] 3rd April 2014
#>
#-------------------------------------------------------------
param([String]$SearchBase, [String]$ReferenceFile)
# Get the script path
$ScriptPath = { Split-Path $MyInvocation.ScriptName }
if ([String]::IsNullOrEmpty($ReferenceFile)) {
$ReferenceFile = $(&$ScriptPath) + "\DuplicateEmployeeIDs.csv";
}
$UsedefaultNamingContext = $False
if ([String]::IsNullOrEmpty($SearchBase)) {
$UsedefaultNamingContext = $True
}
#-------------------------------------------------------------
# Import the Active Directory Module
Import-Module ActiveDirectory -WarningAction SilentlyContinue
if ($Error.Count -eq 0) {
#Write-Host "Successfully loaded Active Directory Powershell's module" -ForeGroundColor Green
}
else {
Write-Host "Error while loading Active Directory Powershell's module : $Error" -ForeGroundColor Red
exit
}
#-------------------------------------------------------------
$defaultNamingContext = (get-adrootdse).defaultnamingcontext
$DistinguishedName = (Get-ADDomain).DistinguishedName
$DomainName = (Get-ADDomain).NetBIOSName
$DNSRoot = (Get-ADDomain).DNSRoot
if ($UsedefaultNamingContext -eq $True) {
$SearchBase = $defaultNamingContext
}
else {
$TestSearchBase = Get-ADobject "$SearchBase"
if ($Null -eq $TestSearchBase) {
$SearchBase = $defaultNamingContext
}
}
#-------------------------------------------------------------
function Get-LastLoggedOnDate ([string] $Date) {
if ($Date -eq $NULL -OR $Date -eq "") {
$Date = "Never logged on before"
}
$Date
}
$LastLoggedOnDate = @{Name = 'LastLoggedOnDate'; Expression = { Get-LastLoggedOnDate $_.LastLogonDate } }
$EmployeeID = @{Name = 'EmployeeID'; Expression = { $_.EmployeeID.Trim() } }
$TotalProcessed = 0
$filter = "(employeeID=*)"
Write-Host -ForegroundColor Green "Finding all users with an employeeID attribute and exporting the duplicates to '$ReferenceFile'`n"
Get-ADUser -LDAPFilter $filter -SearchBase $SearchBase -Properties * | Select-Object $EmployeeID, SamAccountName, Name, Enabled, $LastLoggedOnDate, whenCreated | Group-Object EmployeeID | Where-Object { $_.Count -gt 1 } | Select-Object -Expand Group | Export-Csv -notype "$ReferenceFile"
# Remove the quotes
(Get-Content "$ReferenceFile") | ForEach-Object { $_ -replace '"', "" } | Out-File "$ReferenceFile" -Force -Encoding ascii
Download
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