Powershell to export all farm solutions

Add-PSSnapin Microsoft.SharePoint.PowerShell –erroraction SilentlyContinue

## setup our output directory

$dirName = "d:\Exported 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

    }

}