public/Get-WindowsEvent.ps1
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function Get-WindowsEvent { <# .SYNOPSIS Get Windows Event log items. .DESCRIPTION Get Windows Event log items based on flexible search parameters. .PARAMETER LogName Name of log. Default = System .PARAMETER Id Optional. One or more Event ID numbers. Separate multiple numbers with a comma. Example: -Id 114 Example: -Id "113,114" .PARAMETER Source Optional. Windows Event provider name, such as "Microsoft-Windows-HttpService" (aka "HttpService") .PARAMETER StartTime Optional. Filter results on events which occured on or after StartTime (date and time) .PARAMETER EndTime Optional. Filter results on events which occured on or before EndTime (date and time) .PARAMETER LevelCritical Optional. Filter results on Level = Critical. Level parameters can be combined. .PARAMETER LevelError Optional. Filter results on Level = Error. Level parameters can be combined. .PARAMETER LevelWarning Optional. Filter results on Level = Warning. Level parameters can be combined. .PARAMETER LevelInfo Optional. Filter results on Level = Information. Level parameters can be combined. .PARAMETER LevelVerbose Optional. Filter results on Level = Verbose. Level parameters can be combined. .EXAMPLE Get-WindowsEvent -LogName System -Id 114 -Source "Microsoft-Windows-HttpService" -StartTime "10/20/2023 1:00 PM" Returns System event log items with ID=114 for Source (ProviderName)=Microsoft-Windows-HttpService which occurred on or after 10/20/2023 at 1:00 PM local time .EXAMPLE Get-WindowsEvent -LogName System -Id "113,114" -Source "Microsoft-Windows-HttpService" -LevelCritical -LevelError -LevelWarning Returns System event log items with ID=113 or ID=114 for Source Microsoft-Windows-HttpService which are Level 1,2, or 3 (Critical, Error or Warning) .NOTES .LINK https://github.com/Skatterbrainz/helium/blob/master/docs/Get-WindowsEvent.md #> [CmdletBinding()] param ( [parameter()][string]$LogName = 'System', [parameter()][string]$Id, [parameter()][string]$Source, [parameter()][datetime]$StartTime, [parameter()][datetime]$EndTime, [parameter()][switch]$LevelCritical, [parameter()][switch]$LevelError, [parameter()][switch]$LevelWarning, [parameter()][switch]$LevelInfo, [parameter()][switch]$LevelVerbose ) try { if ($PSVersionTable.Platform -eq 'Unix') { throw "Not supported on Linux systems" } $query = @" <QueryList> <Query Id="0" Path="$LogName"> <Select Path="$LogName">*</Select> </Query> </QueryList> "@ $events = Get-WinEvent -LogName $LogName -FilterXPath $query -ErrorAction Stop $filter = @() $levels = @() $levs = @() if (![string]::IsNullOrWhiteSpace($Id)) { $events = $events | Where-Object {$_.Id -in $($Id -split ',')} } if (![string]::IsNullOrWhiteSpace($Source)) { $events = $events | Where-Object {$_.ProviderName -eq $Source} $filter += "[ProviderName -eq $Source]" } if (![string]::IsNullOrWhiteSpace($StartTime)) { $events = $events | Where-Object {$_.TimeCreated -ge $StartTime} $filter += "[StartTime -ge $StartTime]" } if (![string]::IsNullOrWhiteSpace($EndTime)) { $events = $events | Where-Object {$_.TimeCreated -le $EndTime} $filter += "[EndTime -le $EndTime]" } if ($LevelCritical) { #$events = $events | Where-Object {$_.Level -eq 1} $levs += 1 $levels += "Critical" } if ($LevelError) { #$events = $events | Where-Object {$_.Level -eq 2} $levs += 2 $levels += "Error" } if ($LevelWarning) { #$events = $events | Where-Object {$_.Level -eq 3} $levs += 3 $levels += "Warning" } if ($LevelInfo) { #$events = $events | Where-Object {$_.Level -in (0,4)} $levs += (0,4) $levels += "Information" } if ($LevelVerbose) { #$events = $events | Where-Object {$_.Level -eq 5} $levs += 5 $levels += "Verbose" } if ($levels.Count -gt 0) { $events = $events | Where-Object {$_.Level -in $levs} $filter += "[Level -in ($($levels -join ','))]" } Write-Host "filter: $($filter -join ' ')" -ForegroundColor Cyan $events } catch { Write-Error $_.Exception.Message } } |