Powershell- Add or Remove User from Sharepoint Group

The below sample adds / removes list of user from a sample file.

Sample File: C:\Scripts\user.txt

domainname\user1 domainname\user2 domainname\user3

ADD USERS

$site = new-object Microsoft.SharePoint.SPSite("http://siteurl")

$web = $site.OpenWeb()

$group=$web.Groups["GroupName"]

$users=Get-Content C:\Scripts\user.txt

foreach ($user in $users) {

   write-host "adding user " $user  "to group "  $group

   $temp = $web.EnsureUser($user)

   $group.AddUser($temp)

  

}

REMOVE USERS

$site = new-object Microsoft.SharePoint.SPSite("http://siteurl")

$web = $site.OpenWeb()

$group=$web.Groups["GroupName"]

$users=Get-Content C:\Scripts\user.txt

foreach ($user in $users) {

   write-host "removing  user " $user  " from group "  $group

   $temp = $web.EnsureUser($user)

   $group.RemoveUser($temp)

  

}