#!/usr/bin/php
<?php
// usage: ftpusers ['user1 user2 .. ']
// the list of users must be within quotes, ie, as one argument
// if no user(s) specified, deletes the config file
$config_file = "/boot/config/vsftpd.user_list";
if ($argc > 1)
  file_put_contents($config_file, implode("\n", explode(' ', $argv[1]))."\n");
else
  @unlink($config_file);
?>