Powershell Delete a webpart from a SharePoint webpart page loop

Today I find that when I create new things, often times I create too many things during my testing of say dynamically adding a webpart to a SharePoint webpart page. So I need to have a way to quickly loop through my hundereds of sites and delete the webpart.

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## CONTACT INFO ## ------------------------------------------------ ## CREATED   : 2013.03.30 ## MODIFIED  : ## AUTHOR    : Jason Lasby ## EMAIL     : digitalslavery@gmail.com ## ## DESCRIPTION ## ------------------------------------------------ ## Script to loop through a set of Subsites and  ## Delete a web part from a page stored in the SitePages ## Document Library named Dashboard.aspx ## ## EXPLAINATION ## ------------------------------------------------ ## This example illustrates how to delete a webpart ## from a set of sites that use the same page layout ## and configured with the same web parts, think about ## a company dashboard site where each department may ## report standard data like who is in who is out, ## work related accidents, finance data, shipping ## information, etc... We can loop through our sites ## and add or remove web parts for all sites at once. ## ## BEGIN ## ------------------------------------------------ ## Load up the snapin so Powershell can work with SharePoint ## if the snapin was already loaded don't alert the user Add-PSSnapin microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue ## Clear any errors or output to the screen CLS ## Set variables ## This variable will be the site where I want to start $parentSite = "http://sp2010/dashboards"   function RemoveWebPart {  foreach($wp in $wpm.WebParts | ?{$_.Title -like "* Banner *"})  {   if($wp)   {    $listOfWebParts = $wp.ID    foreach($matchFound in $listOfWebParts)    {     $wpm.DeleteWebPart($wpm.WebParts[$matchFound])     Write-Host "$matchFound was deleted for $webSite"    }   }         } }   Start-SPAssignment -Global ## Create a variable to hold the SharePoint site, invoke the connection ## to the site we defined in the $parentSite variable $web = Get-SPWeb $parentSite ## Check to make sure that url exists if($web) {  ## Loop through all the sub sites of the site url we got  foreach($webSite in $web.Webs)  {   $webSiteName = $webSite.Name   $pageUrl = "SitePages/dashboard.aspx"   $page = $webSite.GetFile($pageUrl)   $wpm = $webSite.GetLimitedWebPartManager($page, [System.Web.UI.WebControls.WebParts.PersonalizationScope]::Shared)   if($wpm)   {    RemoveWebPart   }   else   {    Write-Host "Web part not found"   }       } }  else  {   ## Gracefully let the user know that the site they requested   ## was not available or was not found.   Write-Host "$webSite not found, check the url and try again."  }   Stop-SPAssignment -Global