Clean-up an Amazon EC2 instance before creating an AMI

ami-clean.sh

#!/bin/bash

# Run this script with:
# bash <(curl -s https://gist.github.com/garlandkr/e80674b49270b0199fa6/raw/ami-clean.sh

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

print_green 'Clean Yum'
yum clean all

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

print_green 'AMI cleanup complete!'