90-cleanup-no_dd.sh

#!/bin/bash

# DigitalOcean Marketplace Image Validation Tool
# © 2021 DigitalOcean LLC.
# This code is licensed under Apache 2.0 license (see LICENSE.md for details)

set -o errexit

# Ensure /tmp exists and has the proper permissions before
# checking for security updates
# https://github.com/digitalocean/marketplace-partners/issues/94
if [[ ! -d /tmp ]]; then
  mkdir /tmp
fi
chmod 1777 /tmp

if [ -n "$(command -v yum)" ]; then
  yum update -y
  yum clean all
elif [ -n "$(command -v apt-get)" ]; then
  export DEBIAN_FRONTEND=noninteractive
  apt-get -y update
  apt-get -o Dpkg::Options::="--force-confold" upgrade -q -y --force-yes
  apt-get -y autoremove
  apt-get -y autoclean
fi

rm -rf /tmp/* /var/tmp/*
history -c
cat /dev/null > /root/.bash_history
unset HISTFILE
find /var/log -mtime -1 -type f -exec truncate -s 0 {} \;
rm -rf /var/log/*.gz /var/log/*.[0-9] /var/log/*-????????
rm -rf /var/lib/cloud/instances/*
rm -f /root/.ssh/authorized_keys /etc/ssh/*key*
touch /etc/ssh/revoked_keys
chmod 600 /etc/ssh/revoked_keys