Enumerate site collections, subsites and activate feature using Power Shell

This script enumerates through all site collections for a given web application, then enumerates through all subsites within each site collection and activates the given web level feature, copy the script as mentioned below, change the highlighted sections and save it as IterateSiteSubsitesActivateWebLevelFeature.ps1 file:

 Powershell Script updated on Feb 10th, 2012.

Add-PsSnapin Microsoft.SharePoint.PowerShell

## SharePoint DLL
[void][System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint")

$webApplicationURL = "http://dev-sp-2010:1000"
$featureFolderName = "PublishingWeb"

$webApp = Get-SPWebApplication $webApplicationURL

if($webApp -ne $null)
{
foreach($siteColl in $webApp.Sites)
{
   if($siteColl -ne $null)
   {
foreach($subWeb in $siteColl.AllWebs)
{
if($subWeb -ne $null)
{
# Print each Subsite
#Write-Host $subWeb.Url
                 
#Get Feature ID based on the Feature Name
$FeatureID = Get-SPFeature -Web $subWeb.Url | Where {$_.DisplayName -eq $featureFolderName}

if($FeatureID -ne $null)
{
#Check whether Feature to be activated is already activated for this subsite
if (Get-SPFeature -Web $subWeb.Url | Where {$_.ID -eq $FeatureID.Id})
{
Write-Host $featureFolderName "is already activated at :" $subWeb.Url
   }
else
{
#Enable-SPFeature -Identity $featureFolderName -Confirm:$false -Url $subWeb.url
Write-Host $featureFolderName "has been activated at :" $subWeb.url
}
}
$subWeb.Dispose()
}
else
{
Echo $subWeb "does not exist"
}
}
$siteColl.Dispose()
}
else
{
Echo $siteColl "does not exist"
}
}
}
else
{
Echo $webApplicationURL "does not exist, check the WebApplication name"
}

Remove-PsSnapin Microsoft.SharePoint.PowerShell

Echo Finish

 
To automatically run this script as a batch utility, use the following:
Copy code below, save it as a .bat file to run the powershell script

cd /d %~dp0
powershell -noexit -file ".\IterateSiteSubsitesActivateWebLevelFeature.ps1" "%CD%"
pause

I hope this helps. Also refer to the Microsoft TechNet post for an alternative webservice approach: http://blogs.msdn.com/b/vijay/archive/2009/10/01/how-to-list-all-the-sub-sites-and-the-site-collections-within-a-sharepoint-web-application-using-windows-powershell.aspx

Creating Managed Metadata Termsets using PowerShell

Iterate through the XML file to dynamically create Managed Metadata Groups, Termsets and Terms using Powershell script.

Copy the XML mentioned below and save it as ManagedMetaDataTermSets.xml

<?xml version="1.0"?>
<termstore name="Managed Metadata Service">
  <group name="SharePoint Fix">
    <termset name="Region">
      <term name="North America">
        <term name="USA"></term>
        <term name="Canada"></term>
        <term name="Greenland"></term>
      </term>
      <term name="Technology">
        <term name="Technical Build and Delivery"></term>
        <term name="Technical Consultancy"></term>
        <term name="Technical Design"></term>
      </term>
      <term name="User Experience">
        <term name="Creative Design"></term>
        <term name="Information Architecture"></term>
      </term>
    </termset>
  </group>
</termstore>

The code mentioned below is RTM/Production Ready, you can find the original source code at Benn Robs site: http://sharepointtales.wordpress.com/2010/05/06/manipulating-the-terms-store-through-powershell/

Copy the code below and save it in a CreateTermSets.ps1 file: (replace the highlighted script block with your values)

Add-PsSnapin Microsoft.SharePoint.PowerShell

function SetTermsRecursive ([Microsoft.SharePoint.Taxonomy.TermSetItem] $termsetitem, $parentnode)
{
$parentnode.term
ForEach-Object {
## create the term
if($_ -ne $null)
{
$newterm = $termsetitem.CreateTerm($_.name, 1033)
Write-Host -ForegroundColor Cyan "Added term $_.name"
SetTermsRecursive $newterm $_
}
}
}
#Do not modify anything in the script from here onwards
function Get-ScriptDirectory
{
$Invocation = (Get-Variable MyInvocation -Scope 1).Value
Split-Path $Invocation.MyCommand.Path
}

#Solutions to Deploy
$XMLName = "ManagedMetaDataTermSets.xml"
$XMLPath = Join-Path (Get-ScriptDirectory) $XMLName

echo "Extracting information from the $XMLPath"

#Site Collection URL - Give your site collection url in quotation marks
$TaxonomySiteUrl = "http://localhost"

#Access the TermStore data
[xml]$TermStoreData = Get-Content ($XMLPath)

$site = Get-SPSite $TaxonomySiteUrl
$session = new-object Microsoft.SharePoint.Taxonomy.TaxonomySession($site)
$termstore = $session.TermStores[$TermStoreData.termstore.name]
$TermStoreData.termstore.group

ForEach-Object {
## create the group
if ($termstore.Groups[$_.name] -eq $null)
{
$group = $termstore.CreateGroup($_.name);
Write-Host -ForegroundColor Cyan "Added group $_.name"
$_.termset

ForEach-Object {
## create the termset
$termset = $group.CreateTermSet($_.name)
Write-Host -ForegroundColor Cyan "Added termset $_.name"
SetTermsRecursive -termsetitem $termset -parentnode $_
}
}
}

$termstore.CommitAll()

Copy code below, save it as a .bat file to automatically run the powershell script
cd /d %~dp0
powershell -noexit -file ".\CreateTermSets.ps1" "%CD%"
pause

I have created another PowerShell script that reads through the XML file and delete the respective termsets and group:

Add-PsSnapin Microsoft.SharePoint.PowerShell

#Do not modify anything in the script from here onwards
function Get-ScriptDirectory
{
 $Invocation = (Get-Variable MyInvocation -Scope 1).Value
 Split-Path $Invocation.MyCommand.Path
}

#Solutions to Deploy
$XMLName = "ManagedMetaDataTermSets.xml"
$XMLPath = Join-Path (Get-ScriptDirectory) $XMLName
echo "Extracting information from the $XMLPath"

#Site Collection URL - Give your site collection url in quotation marks
$TaxonomySiteUrl = "http://localhost"

#Access the TermStore data
[xml]$TermStoreData = Get-Content ($XMLPath)
$site = Get-SPSite $TaxonomySiteUrl
$session = new-object Microsoft.SharePoint.Taxonomy.TaxonomySession($site)
$termstore = $session.TermStores[$TermStoreData.termstore.name]

$TermStoreData.termstore.group |
 ForEach-Object {
  ## create the group
  if ($termstore.Groups[$_.name] -ne $null)
  {
    # $_.termset | ForEach-Object {
    #$termstore.Groups[$_.name].TermSet
    Write-Host -ForegroundColor Cyan "Deleted $termsetCollection"

 #Get the Term Store Group object
 $groupName = $termstore.Groups[$_.name]

 #Get Term Sets from the Group
 $groupName.TermSets | ForEach-Object {
   $_.Delete();
 }

# #Iterate through each
# foreach($termSet in $termstore.Groups[$_.name].TermSets)
# {
#  $termSet.Delete();
# }

 #Finally delete the Group
 $termstore.Groups[$_.name].Delete()
   }
  }
 $termstore.CommitAll()

I hope this helps.