How to get site collections URL, title, site owners and site admins through Powershell on SP2016

Question

I am able to return for "sitecollectionURL" the primary and secondary admins using the followins PS:

Get-SPSite "sitecollectionURL" | foreach-object{ Write-host $_.Url - $_.RootWeb.Title - $_.Owner.Name - $_.SecondaryContact.Name}

but what I really want is all the ones listed on site settings > site collection owners group (different than primary and secondary site collection admin) and also the site settings > site collection administrators.

Answer 1

No need to have a query for finding the owners group.

If you do not know the name of "owners group", the web by default gives you the property $web.associatedownersgroup .

This returns the owners group .

Answer 2

Are you referring to the Site Collection Owners group?

In that case, use the following:

$web = get-spweb "RootWeb Url"
$web.Groups | Where {$_.Name -eq "Site Collection Owners"} | select Users 

To get the Site Collection Administrators, use the following ($web has the same value as above):

$web.SiteAdministrators

Edit: If you do not know the name of the Owners group, you can still retrieve the groups that have Full Control access on the site, which usually includes the "Owners" (here $web has the same value as above):

$web.Groups | ?{$_.Roles.Name -contains "Full Control"}  | select Name,Roles