Get-PSWindowsUpdateLog.ps1

function Get-PSWindowsUpdateLog
{
<#
.Synopsis
Parsing WindowsUpdate.log to objects for easy reporting. Default will retrieve the most recent 100 entires only.
.DESCRIPTION
This function will retrieve and then parse the c:\windows\system32\WindowsUpdate.log on local or remote computers. Using the -all parameter, the full log will be retrieved but this could be lengthy.
.EXAMPLE
PS E:\_PSTemp> Get-PSWindowsUpdateLog -ComputerName localhost

        ComputerName : localhost
        Date         : 2016-04-22
        Time         : 07:27:27:348
        ID           : 484
        Code         : 22e0
        Category     : AU
        Message      : #########

        ComputerName : localhost
        Date         : 2016-04-22
        Time         : 07:27:27:348
        ID           : 484
        Code         : 22e0
        Category     : AU
        Message      : ##  END  ##  AU: Search for updates [CallId = {FF0D2B2F-11E7-406F-AE97-B2C601CED0B0}]
        
.OUTPUTS
Custom objects that are actually string array.

#>
[CmdletBinding()]
    [outputtype([string[]])]
        
    Param
    (
        [Parameter(Mandatory=$true,
                   ValueFromPipelineByPropertyName=$true,
                   Position=0)]
        [string[]]$ComputerName,
        
        # Log path on remote computers       
        [string]$WUlogPath ='c$\windows\windowsupdate.log',
        
        # Number of the recent log entries to retrive. Default 100.
        [int]$TailLogEntry = 100,
        
        # Get the full log
        [switch]$all

    )

    Begin
    {           
        [string[]]$result = ""
        Write-Verbose -Message "Computer is $ComputerName"
    }
    Process
    {
        foreach ($c in $ComputerName) {
            try {
                Write-Verbose -Message "checking $c"
                
                if ($all){
                    $result = get-content -Path "\\$c\$WUlogPath" -ErrorAction Stop                   
                }
                else
                {
                    $result = get-content -Path "\\$c\$WUlogPath" -Tail $TailLogEntry -ErrorAction Stop    
                }
                
            }
            catch {
                Write-Warning "$c - Unable to get Windows update log."
                break
            }
                                   
            foreach ($r in $result){
                    
                    if ($r.length -eq 0){
                        Write-Verbose 'hitting the blank'
                        continue
                    }

                    else{
                    
                        Write-Verbose -Message "checking $r"

                        $token = $r -split '\s+', 6

                    $prop = [ordered]@{
                        'ComputerName' 		 = $c
                        'Date'			 = $token[0]
                        'Time' 			 = $token[1]
                        'ID' 			 = $token[2]
                        'Code'			 = $token[3]
                        'Category'		 = $token[4]
                        'Message' 		 = $token[5]                 
                    }
                
                    $WULogObj = New-Object -TypeName psobject -Property $prop
                    $WULogObj.psobject.TypeNames.Insert(0,'PS.WULogObj')
                
                    Write-Output $WULogObj
                }
            }
        }
    }
    End
    {
    }
}