Public/Get-ALHADComputerLogonTime.ps1
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<#PSScriptInfo
.VERSION 1.1.1 .GUID 82dca212-e866-44d7-b801-297bbc45ad61 .AUTHOR Dieter Koch .COMPANYNAME .COPYRIGHT (c) 2021-2023 Dieter Koch .TAGS .LICENSEURI https://github.com/admins-little-helper/ALH/blob/main/LICENSE .PROJECTURI https://github.com/admins-little-helper/ALH .ICONURI .EXTERNALMODULEDEPENDENCIES .REQUIREDSCRIPTS .EXTERNALSCRIPTDEPENDENCIES .RELEASENOTES 1.0 - Initial release 1.1.0 - Made script accept values for paramter ComputerName from pipeline. 1.1.1 - Corrected typos and cleaned up usage of write-host #> <# .DESCRIPTION Contains function to query 'lastLogon' and 'lastLogonTimestamp' attributes from multiple Domain Controller in the current AD domain for one ore more computer objects. #> function Get-ALHADComputerLogonTime { <# .SYNOPSIS Queries 'lastLogon' and 'lastLogonTimestamp' attributes from multiple Domain Controller in the current AD domain for one ore more computer objects. .DESCRIPTION Queries 'lastLogon' and 'lastLogonTimestamp' attributes from multiple Domain Controller in the current AD domain for one ore more computer objects. .PARAMETER ComputerName One ore more computer names to query information for. Separate list with commas. If no value is provied, the local computer will be used. .PARAMETER DomainController One ore more Domain Controller names to query information for. Separate list with commas. If no value is provied, all DCs in the current domain are queried. .EXAMPLE Get-ALHADComputerLogonTime -ComputerName MyComputer .EXAMPLE Get-ALHADComputerLogonTime -ComputerName MyComputer1, MyComputer2 .EXAMPLE Get-ALHADComputerLogonTime -ComputerName MyComputer1, MyComputer2 -DomainController adds1,adds2 .EXAMPLE (Get-ADComputer -Filter {name -like "a*"}).Name | Get-ALHADComputerLogonTime -DomainController $(Get-ALHADDSDomainController -All) Get lastlogontime for all computers in AD where name starts with 'a', from all domain controller in the current domain. .INPUTS String or array of string .OUTPUTS PSCustomObject .NOTES Author: Dieter Koch Email: diko@admins-little-helper.de .LINK https://github.com/admins-little-helper/ALH/blob/main/Help/Get-ALHADComputerLogonTime.txt #> [CmdletBinding()] param ( [Parameter(ValueFromPipeline, HelpMessage = 'Enter one or more computer names')] [ValidateNotNullOrEmpty()] [string[]] $ComputerName = $env:COMPUTERNAME, [Parameter(HelpMessage = 'Enter one or more domain controller to query')] [string[]] $DomainController ) begin { $RequiredModules = "ActiveDirectory" foreach ($RequiredModule in $RequiredModules) { if (-not [bool](Get-Module -Name $RequiredModule)) { if (-not [bool](Get-Module -Name $RequiredModule -ListAvailable)) { Write-Warning -Message "Module $RequiredModule not found. Stopping function." break } Write-Verbose -Message "Importing $RequiredModule Module" Import-Module ActiveDirectory } } if ($null -eq $DomainController -or $DomainController.Length -eq 0) { try { Write-Verbose -Message "Trying to get list of all domain controller..." $DCs = Get-ADDomainController -Filter * -ErrorAction Stop } catch { Write-Error "Error getting domain controller" break } } else { Write-Verbose -Message "DCs specified..." Write-Verbose -Message "$($DomainController -join '; ')" $UniqueDCs = $DomainController | Select-Object -Unique Write-Verbose -Message "Unique DC names..." Write-Verbose -Message "$($UniqueDCs -join '; ')" $DCs = foreach ($DC in $UniqueDCs) { Write-Verbose -Message "Checking if DC exists: $DC..." $DCInfo = Get-ADDomainController -Filter { Name -eq $DC } -ErrorAction SilentlyContinue $DCInfo } } $DCs = foreach ($DCtoTest in $DCs) { if ($null -eq $DCtoTest) { Write-Verbose -Message "DC not found in domain: $DCtoTest..." $DCInfo = [PSCustomObject]@{ Name = $DCtoTest Exists = $false Available = $false } } else { Write-Verbose -Message "Checking if DC is available: $DCtoTest..." $DCInfo = $DCtoTest | Select-Object -Property *, ` @{Name = 'Exists'; Expression = { $true } }, ` @{Name = 'Available'; Expression = { Test-Connection -ComputerName $DCtoTest -Count 2 -Quiet } } $DCInfo } } } process { $i = 0 $ComputerCount = ($ComputerName | Measure-Object).Count $j = 0 $DCCount = ($DCs | Measure-Object).Count foreach ($computer in $ComputerName) { Write-Verbose -Message "Querying information for computer $computer..." Write-Progress -Activity "Querying information for computer $computer" -Status "$i out of $ComputerCount done" -PercentComplete $([int] 100 / $ComputerCount * $i) $i++ $j = 0 foreach ($DC in $DCs) { try { Write-Verbose -Message "Querying information from domain controller $($DC.Name)..." Write-Progress -Id 1 -Activity "Querying information from DC $($DC.Name)" -Status "$j out of $DCCount done" -PercentComplete $([int] 100 / $DCCount * $j) $j++ $ComputerInfo = $null if ($DC.Available) { $ComputerInfo = Get-ADComputer -Server $DC.Name -Filter { Name -eq $computer } -Properties lastLogon, lastLogonTimestamp $ComputerInfo = $ComputerInfo | Select-Object -Property Name, @{Name = 'lastLogon'; Expression = { [datetime]::FromFileTime($_.lastLogon) } }, @{Name = 'lastLogonTimestamp'; Expression = { [datetime]::FromFileTime($_.lastLogonTimestamp) } }, @{Name = 'DC'; Expression = { $DC.Name } }, @{Name = 'DCExists'; Expression = { $DC.Exists } }, @{Name = 'DCAvailable'; Expression = { $DC.Available } } } else { $ComputerInfo = [PSCustomObject]@{ Name = $computer lastLogon = '' lastLogonTimestamp = '' DC = $DC.Name DCExists = $DC.Exists DCAvailable = $DC.Available } } } catch { Write-Error $_ } $ComputerInfo } } } } #region EndOfScript <# ################################################################################ ################################################################################ # #< ______ _ __ _____ _ _ # | ____| | | / _| / ____| (_) | | # | |__ _ __ __| | ___ | |_ | (___ ___ _ __ _ _ __ | |_ # | __| | '_ \ / _` | / _ \| _| \___ \ / __| '__| | '_ \| __| # | |____| | | | (_| | | (_) | | ____) | (__| | | | |_) | |_ # |______|_| |_|\__,_| \___/|_| |_____/ \___|_| |_| .__/ \__| # | | # |_| ################################################################################ ################################################################################ # created with help of http://patorjk.com/software/taag/ #> #endregion |