Powershell to add user in Sharepoint group

Below is the PS commands to give permission to user in any SharePoint site in any SharePoint group

Here I have added my account(RR) to group “test 222 Owners” of site collection https://***/sites/test_222/

• Replace https://***/sites/test_222/  with Site collection URL   
• Replace test 222 Owners with group name
• Replace RR  with User Signum.

So use above work around to resolve individual’s incident related  to access issue or add user incidents in Ericoll extranet site.

$SiteCollection = Get-SPSite “https://***/sites/test_222/”

$Rootweb = $SiteCollection.RootWeb

$NewExtranetUser = New-SPUser -UserAlias "i:0#.w|ericsson\RR"

                Web  "https://***/sites/test_222/"  <Above command will ask for web value so give your site collection URL>

$SharePointGroup = Rootweb.SiteGroups["test 222 Owners"]

Set-SPUser -Identity $NewExtranetUser -Web Rootweb -Group $SharePointGroup