Clean-up an Amazon EC2 instance before creating an AMI

ubuntu-ami-clean.sh

#!/bin/bash

# Run this script with:
# bash <(curl -s https://gist.githubusercontent.com/mikedixson/ab4365d7ff43c5fcbdaef9e4a5a186ac/raw/df8d4e298a0f1d9b34b134797f9993896db36970/ubuntu-ami-clean.sh)

function print_green {
  echo -e "\e[32m${1}\e[0m"
}

print_green 'Clean apt'
apt clean all

print_green 'Remove SSH keys'
[ -f /home/ubuntu/.ssh/authorized_keys ] && rm /home/ec2-user/.ssh/authorized_keys

print_green 'Cleanup log files'
find /var/log -type f | while read f; do echo -ne '' > $f; done

print_green 'Cleanup bash history'
unset HISTFILE
[ -f /root/.bash_history ] && rm /root/.bash_history
[ -f /home/ubuntu/.bash_history ] && rm /home/ubuntu/.bash_history

print_green 'AMI cleanup complete!'

Updated to clean up an ubuntu based instance