Public/Save-LatestUpdate.ps1
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Function Save-LatestUpdate { <# .SYNOPSIS Downloads the latest cumulative update passed from Get-LatestUpdate. .DESCRIPTION Downloads the latest cumulative update passed from Get-LatestUpdate to a local folder. Then do one or more of the following: - Import the update into an MDT share with Import-LatestUpdate to speed up deployment of Windows (reference images etc.) - Apply the update to an offline WIM using DISM - Deploy the update with ConfigMgr (if not using WSUS) .NOTES Author: Aaron Parker Twitter: @stealthpuppy .PARAMETER Updates The array of latest cumulative updates retreived by Get-LatestUpdate. .PARAMETER Path A destination path for downloading the cumulative updates to. This path must exist. Uses the current diretory by default. .EXAMPLE Get-LatestUpdate | Save-LatestUpdate Description: Retreives the latest Windows 10 Cumulative Update with Get-LatestUpdate and passes the array of updates to Save-LatestUpdate on the pipeline. Save-LatestUpdate then downloads the latest updates to the current directory. .EXAMPLE $Updates = Get-LatestUpdate -WindowsVersion Windows10 -Build 14393 Save-LatestUpdate -Updates $Updates -Path C:\Temp\Update Description: Retreives the latest Windows 10 build 14393 (1607) Cumulative Update with Get-LatestUpdate, saved to the variable $Updates. Save-LatestUpdate then downloads the latest updates to C:\Temp\Update. #> [CmdletBinding(SupportsShouldProcess = $True)] [OutputType([Array])] Param( [Parameter(Mandatory = $True, Position = 0, ValueFromPipeline = $True, ValueFromPipelineByPropertyName = $True, ` HelpMessage = "The array of updates from Get-LatestUpdate.")] [ValidateNotNullOrEmpty()] [Array] $Updates, [Parameter(Mandatory = $False, Position = 1, ValueFromPipeline = $False, ` HelpMessage = "Specify a target path to download the update(s) to.")] [ValidateScript( { If (Test-Path $_ -PathType 'Container') { $True } Else { Throw "Cannot find path $_" } })] [String] $Path = $PWD ) Begin { $Path = Get-ValidPath $Path } Process { $Urls = $Updates | Select-UniqueUrl ForEach ( $url in $urls ) { $filename = Split-Path $url -Leaf $target = "$($Path)\$($filename)" Write-Verbose "Download target will be $target" $displayName = $Updates | Where-Object { $_.Url -eq $url } | Select-Object -ExpandProperty Note | Select-Object -First 1 # If the update is not already downloaded, download it. If (!( Test-Path -Path $target )) { If ( Get-Command Start-BitsTransfer -ErrorAction SilentlyContinue ) { # If BITS is available, let us it If ( $pscmdlet.ShouldProcess($(Split-Path $url -Leaf), "BitsDownload") ) { Start-BitsTransfer -Source $url -Destination $target ` -Priority High -ErrorAction Continue -ErrorVariable $ErrorBits ` -DisplayName $displayName -Description "Downloading $($url)" } } Else { # BITS isn't available (likely PowerShell Core) If ( $pscmdlet.ShouldProcess($url, "WebDownload") ) { Invoke-WebRequest -Uri $url -OutFile $target } } } Else { Write-Verbose "File exists: $target. Skipping download." } } } End { Write-Output $urls } } |