Add/Update Site Collection Administrator using PowerShell

Update Site Collection Admin to all SiteCollections which starts with qw in a WebApplication

cls

  

Add-PSSnapin "Microsoft.SharePoint.PowerShell" 

 $collabWebs =  Get-SPWebApplication "http://localdevrtm" | Get-

SPSite -Limit All | where 

{$_.Url like "http://test.dev.local/sites/qw*"}

  

 $collabWebs | % { $web = $_

    

  if($web.IsRootWeb)

  {

   $NewAdmin = $web.EnsureUser("devuser\manju")

   $NewAdmin .IsSiteAdmin = $true

   $NewAdmin .Update()

  

  }

    }

# collabwebs object contains list of Site urls from WebApp http://localdevrtm which starts with  http://..../sites/qw*

#$_ is the Current object

# Url is property which has list of Sitecollections

# % is for looping through list of urls which we got from $collabwebs

   

# check if $web is a root web if so go ahead and add the SiteCollection Admininstrator

PowerShell script to Update SiteCollection Admin  for Single SiteCollection

cls

  

Add-PSSnapin "Microsoft.SharePoint.PowerShell" 

 $site =  Get-SPSite -Identity "http://test.dev.local/sites/qw"

  

 $web=$site.RootWeb;

  if($web.IsRootWeb)

  {

   $NewAdmin = $web.EnsureUser("devuser\manju")

   $NewAdmin .IsSiteAdmin = $true

   $NewAdmin .Update()

    

   Write-Host " Site Collection Admin Successfully Added"

  

  }

 else

{

 Write-Host " Site Collection Admin is not updated "

}

    

OutPut: