Get-AdUsersInGroups.ps1

# Import the Active Directory module if not already loaded
Import-Module ActiveDirectory

# Get the path to the text file from the script arguments
param (
    [string]$groupFile
)

# If no path is provided, exit the script
if ([string]::IsNullOrWhiteSpace($groupFile)) {
    Write-Output "Please provide the path to the text file."
    Exit
}

# Read the group names from the file
$groupNames = Get-Content -Path $groupFile


# Initialize an empty array to store user objects
$users = @()

# Loop through each group and find the users
foreach ($group in $groupNames) {
    # Get the AD group
    $adGroup = Get-ADGroup -Identity $group -ErrorAction SilentlyContinue

    # If the group is found, get the members
    if ($null -ne $adGroup) {
        $groupMembers = Get-ADGroupMember -Identity $adGroup -Recursive | Where-Object { $_.objectClass -eq 'user' }
        
        # Add each member to the users array
        foreach ($user in $groupMembers) {
            $userInfo = New-Object PSObject -Property @{
                Username = $user.SamAccountName
                Name     = $user.Name
                Group    = $group
            }
            
            $users += $userInfo
        }
    }
    else {
        Write-Output "Group '$group' not found."
    }
}

# Output the user objects
$users | Format-Table -Property Username, Name, Group