cleanup.sh

#!/bin/bash -eux

# Make sure udev does not block our network - http://6.ptmc.org/?p=164
echo "==> Cleaning up udev rules"
rm -rf /dev/.udev/
rm /lib/udev/rules.d/75-persistent-net-generator.rules

echo "==> Cleaning up leftover dhcp leases"
# Ubuntu 10.04
if [ -d "/var/lib/dhcp3" ]; then
    rm /var/lib/dhcp3/*
fi
# Ubuntu 12.04 & 14.04
if [ -d "/var/lib/dhcp" ]; then
    rm /var/lib/dhcp/*
fi 

# Add delay to prevent "vagrant reload" from failing
echo "pre-up sleep 2" >> /etc/network/interfaces

echo "==> Cleaning up tmp"
rm -rf /tmp/*

# Cleanup apt cache
apt-get -y autoremove --purge
apt-get -y clean
apt-get -y autoclean

echo "==> Installed packages"
dpkg --get-selections | grep -v deinstall

DISK_USAGE_BEFORE_CLEANUP=$(df -h)

# Remove Bash history
unset HISTFILE
rm -f /root/.bash_history
rm -f /home/ubuntu/.bash_history

# Clean up log files
find /var/log -type f | while read f; do echo -ne '' > "${f}"; done;

echo "==> Clearing last login information"
>/var/log/lastlog
>/var/log/wtmp
>/var/log/btmp