Updates Debian/Ubuntu/Linux Mint and auto-removes unused kernels to keep the boot partition from running out of space.

do-upgrades.sh

#!/bin/bash

# Run this script as root.

# Break on any errors.
set -e

apt-get update
dpkg --configure -a
apt-get -y autoremove
echo "Uninstalling all but the current kernel - $(uname -r)..."
apt-get -y remove `dpkg --get-selections | egrep "(linux-image-|linux-headers-|linux-image-extra-)" | grep -v "$(uname -r)" | sed "s/\t.*//gi" | tr '\n' ' '`

apt-get -y upgrade
apt-get -y dist-upgrade

echo "That went well."