Powershell to export a solution file....or all solution files from SharePoint 2013

These two are cousins.  The first will export a single solution (wsp) file.  The second script will hoover them all up.  I use these basically every day.

Add-PSSnapin Microsoft.SharePoint.Powershell
$farm = Get-SPFarm
$file = $farm.Solutions.Item("some.solution.wsp").SolutionFile
$file.SaveAs("c:\bk\some.solution.wsp")

***

Add-PSSnapin Microsoft.SharePoint.Powershell

    ## setup our output directory
    $dirName = "f:\installations\solutions"

    Write-Host Exporting solutions to $dirName
    foreach ($solution in Get-SPSolution)
    {
        $id = $Solution.SolutionID
        $title = $Solution.Name
        $filename = $Solution.SolutionFile.Name

        Write-Host "Exporting ‘$title’ to …\$filename" -nonewline
        try {
            $solution.SolutionFile.SaveAs("$dirName\$filename")
            Write-Host " – done" -foreground green
        }
        catch
        {
            Write-Host " – error : $_" -foreground red
        }
    }