VM Clean Up (cleaning up Debian based system for use as template)

vm-clean-up.sh

#!/bin/bash

# Clean up Apt
apt-get autoremove
apt-get autoclean
apt-get clean

# Delete SaltStack minion keys and ID file
# New files are generated when the service starts
rm -vf /etc/salt/pki/minion/*
rm -vf /etc/salt/minion_id

# Generate new SSH host keys
for T in dsa rsa ecdsa; do 
  echo -e 'y\n'|ssh-keygen -t $T -N "" -f /etc/ssh/ssh_host_${T}_key
done

# Remove everything in the /tmp directory:
rm -rvf /tmp/*

# Clean up logs
rm -vf /var/log/wtmp /var/log/btmp
rm -vf /var/log/*.log.*
rm -vf /var/log/*/*

# Clean up the command history:
history -c

# Almost done but we don't want to leave the last commands in the history either
unset HISTFILE