PowerShell script for removing multiple WSP solutions

In case of big SharePoint Farms with multiple SharePoint WSP solutions deployed, sometimes it is very difficult to remove some specific solutions automatically as each solution retraction takes some time and we may also need to execute SharePoint 2010 Administration service (SPAdminv4) Job after removing individual solution from the Farm. A more manageable way could be to create a PowerShell script, that runs on the Farm to remove the listed wsp solutions. I created one of such solution for a client who had around 50-60 such solutions. Below is the script that you can use to completely uninstall the wsp solutions from SharePoint Farm. This script should be placed inside a folder along with the wsp solutions which needs to be removed. 

Copy-Paste the below script in a text file and rename its extension to - *.ps1

function LoadSharePointPowerShellEnvironment

{

       write-host

       write-host "Setting up PowerShell environment for SharePoint..." -foregroundcolor Yellow

       write-host

       Add-PSSnapin "Microsoft.SharePoint.PowerShell" -ErrorAction SilentlyContinue

       write-host "SharePoint PowerShell Snapin loaded." -foregroundcolor Green

}

function RetractSolution($packageName)

{

  $spAdminServiceName = "SPAdminV4"

  $solution = Get-SPSolution $packageName -ErrorAction SilentlyContinue

         if ($solution -ne $null)

         {

                     #Retract the solution

                     if ($solution.Deployed)

                     {

                       Write-Host

                       Write-Host "Retracting solution $packageName..." -foregroundcolor Yellow

                             if ($solution.ContainsWebApplicationResource)

                             {

                                  $solution | Uninstall-SPSolution -AllWebApplications -Confirm:$false

                             }

                             else

                             {

                                  $solution | Uninstall-SPSolution -Confirm:$false

                             }

                       Write-Host

                       Write-Host "starting admin service...(this may take few minutes to complete)" -foregroundcolor Yellow

                       Stop-Service -Name $spAdminServiceName

                       Start-SPAdminJob -Verbose

                       Start-Service -Name $spAdminServiceName

                       #Block until we're sure the solution is no longer deployed.

                       do { Start-Sleep 2 } while ((Get-SPSolution $packageName).Deployed)

                     }

              #Delete the solution

              Write-Host

              Write-Host "Removing solution $packageName..."

              Get-SPSolution $packageName | Remove-SPSolution -Confirm:$false

              Write-Host "Solution Removed Sucessfully." -foregroundcolor Green

         }

         else

         {

               Write-Host

              Write-Host "No solution found to retract with name $packageName" -foregroundcolor Yellow

         }

}

#

# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

#                                                                    Retract the package

# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

#

LoadSharePointPowerShellEnvironment

Write-host "Retracting Solution..." -foregroundcolor Yellow

 $dir = $(gl)

 $list = Get-ChildItem $dir | where {$_.extension -eq ".wsp"}

 foreach($my_file in Get-ChildItem $list)

 {

       write-host $my_file.Name

       [string]$packageName = $my_file.Name

       RetractSolution $packageName

 }