Must-use WordPress plugin with a CLI command that resets passwords and generates a list of users with new passwords. It does not notify them. Plain simples user password reset mechanism that can be used for internal purposes.

mu-passwords.php

<?php
/**
 * Password management made easy
 *
 * @author   Move Your Digital, Inc.
 * @package  Mu-Passwords
 * @version  1.0.0
 */

/*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

class WP_Cli_Mu_Passwords {
  /**
   * Resets users passwords
   *
   * ## OPTIONS
   * [--format=<format>]
   * : Which format the data is used.
   * ---
   * default: table
   * options:
   *   - csv
   *   - table
   *   - json
   *   - yaml
   * ---
   *
   * [--roles=<roles>]
   * : Optionally filters by roles
   *
   * [--email=<email>]
   * : Optionally filter by email
   *
   * [--fields=<fields>]
   * : Optionally display these filters
   * ---
   * default: ID,display_name,user_login,user_email
   * ---
   *
   * ## EXAMPLES
   *
   *    wp password reset --roles=subscriber,editor --format=csv
   *
   * @when after_wp_load
   */
  public function reset( $args, $params ) {

    $query = [];

    if ( isset( $params['roles'] ) ) {
      $query['role__in'] = explode( ',', $params['roles'] );
    }

    if ( isset( $params['email'] ) ) {
      $users = [
        get_user_by( 'email', $params['email'] )
      ];

      if ( isset( $params['roles'] ) ) {
        WP_CLI::warning( 'roles parameter ignored as email parameter is set' );
      }

    } else {
      $users = get_users( $query );

    }

    foreach ( $users as $user ) {
      $user->new_user_pass = wp_generate_password();
      wp_set_password( $user->new_user_pass, $user->ID );
    }

    WP_CLI\Utils\format_items( $params['format'], $users, array_merge(
        explode( ',', $params['fields'] ), [ 'new_user_pass' ]
    ) );
  }
}

/**
 * Fires once all must-use and network-activated plugins have loaded.
 *
 * @since 1.0.0
 */
add_action( 'muplugins_loaded', function () {

  if ( defined( 'WP_CLI' ) && WP_CLI ) {
    WP_CLI::add_command( 'password', 'WP_Cli_Mu_Passwords' );
  }

} );