Modifying group owners of sites with ps

Question

I need help here with powershell, as im not that good in, im only starting, but i need already to make a powershell script but will run thru all collaborative spaces and modify 4 groups by setting different group owners.

Here is what i have:

function RetrieveSites()
{
    $cs = Get-CsWebAppUrl
    Get-SPSite -WebApplication $cs -Limit All | % {
        Write-host "Retrieving $($Site.Url)"
        ModifyGroupOwners -Site $_
    } 
}

function ModifyGroupOwners([Microsoft.SharePoint.SPSite] $Site)
{
    $spgroup = Get-SPGroup -Site $site -Limit All | % {
        if((spgroup.name -eq "Approver") -or ($spgroup.name -eq "Designer") -or ($spgroup.name -eq "Hierarchy Managers") -or ($spgroup.name -eq "Style Resource Readers") -or ($spgroup.name -eq "Restricted readers"))
        {
            $owner=$spgroup.name + " Managers"
            $spgroup.owner=$spgroup[$owner]
            $spgroup.update
            Write-host "$($spgroup.name) was updated"
        }
    }
}

function Get-CsWebAppUrl()
{
    $Farm = (Get-SPFarm)
    $CsWebAppUrl = $farm.Properties[$global:CsKey]
    if ([string]::IsNullOrEmpty($CsWebAppUrl))
    {
        write-error "Unable to find group Url, please check the portal map configuration"
        exit 1
    }
    return $CsWebAppUrl
}

So the big problem is for retrieving the groups and modifying them, i wrote some ps code but im not sure and i want to have some help and guidance.

Thanks alot for help in advance.

Answer 1

This little and simple script will go through all site collections on all web application and set group owner for desired groups:

Add-PsSnapin Microsoft.SharePoint.PowerShell

$groupNames = @("Approver", "Designer", "Hierarchy Managers", 
                    "Style Resource Readers", "Restricted readers" )
$ownerUsername = "UserName"

$webApps = Get-SPWebApplication 
foreach ($webApp in $webApps) {
  $web = Get-SPWeb $webApp.Url 
  $spuser = $web.EnsureUser($ownerUsername)

  foreach ($groupName in $groupNames) {
      $group = $web.SiteGroups[$groupName]
      $group.Owner = $spuser
      $group.Update()
  }
}

I hope this is what are you looking for. And keep in mind this is just example, some logging and error handling would be useful.

Edited

To search only one site collection:

  ....

  $web = Get-SPWeb "http://mycoolsite/"
  $spuser = $web.EnsureUser($ownerUsername)

  foreach ($groupName in $groupNames) {
      $group = $web.SiteGroups[$groupName]
      $group.Owner = $spuser
      $group.Update()
  }