lenny-to-wheezy.sh

#!/bin/bash

# -- Set up environment variables for unattended installation of packages
export DEBIAN_FRONTEND=noninteractive
export DEBIAN_PRIORITY=critical

# -- Update to a newer debian-archive-keyring
aptitude update
aptitude -q -y install debian-archive-keyring

# -- Change the APT repositories
cat > /etc/apt/sources.list <<EOF
deb http://ftp.us.debian.org/debian/ testing main
deb-src http://ftp.us.debian.org/debian/ testing main
EOF

# -- Update the package cache and do a full upgrade
aptitude update
aptitude -q -y -o DPKG::Options::=--force-confnew safe-upgrade
aptitude -q -y -o DPKG::Options::=--force-confnew full-upgrade

# -- Set up locales
debconf-set-selections <<EOF
locales locales/locales_to_be_generated multiselect en_US.UTF-8 UTF-8
locales locales/default_environment_locale select en_US.UTF-8
EOF
aptitude -q -y install locales

# -- Reboot
shutdown -r now