#!/bin/bash
# Copyright 2021 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
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## Section: 5.3.3 Ensure password reuse is limited (Not Scored) ##
sed -i '0,/password/s//password        required        pam_pwhistory.so remember=5\n&/' \
  /etc/pam.d/system-auth
sed -i 's/password.*pam_unix.so/& remember=5/' /etc/pam.d/system-auth