PowerShell: Add bulk users in one AD group

 Add Multiple users in one AD group:

Import-Module ActiveDirectory
$grp = ‘test1‘
$comps=Get-Content C:\users.txt

$grpDN = (get-adgroup $grp).distinguishedname

foreach ($user in $users)
{ #$dns=get-aduser $user
$b=$dns.distinguishedname
Add-ADGroupMember -Identity $grpDN -member $user
}