Export-SPFarmSolutions.ps1

#Specify the directory location to export files
$dirName = "c:\spbackups"

if(!(Test-Path $dirName)){
 New-Item -Path $dirName -ItemType Directory -Force
}

Write-Output Exporting solutions to $dirName
 
foreach ($solution in Get-SPSolution) 
{ 
 $id = $solution.SolutionID 
 $title = $solution.Name 
 $filename = $solution.SolutionFile.Name
 Write-Output "Exporting ‘$title’ to …\$filename" -nonewline 
 try { 
 $solution.SolutionFile.SaveAs("$dirName\$filename") 
 Write-Output " – done" -foreground green 
 } 
 catch 
 { 
 Write-Output " – error : $_" -foreground red 
 } 
}