Efficient File and Folder Permissions Management with PowerShell

# Specify the folder path
$folderPath = "C:\Path\To\Your\Folder"
# Define the user and their access rights
$user = "DOMAIN\UserName"
$accessRights = "ReadAndExecute"
# Get the current ACL of the folder
$acl = Get-Acl -Path $folderPath
# Check if the user already has access
$existingRule = $acl.Access | Where-Object { $_.IdentityReference -eq $user }
if ($existingRule) {
    Write-Host "$user already has access with rights: $($existingRule.FileSystemRights)"
} else {
    # Create a new access rule
    $accessRule = New-Object System.Security.AccessControl.FileSystemAccessRule($user, $accessRights, "Allow")
    # Apply the new access rule
    $acl.AddAccessRule($accessRule)
    Set-Acl -Path $folderPath -AclObject $acl
    Write-Host "Permissions for $user have been added to $folderPath."
}