UbuntuUpdates.sh

#!/bin/bash

# Description:   A simple script to update an Ubuntu system.

# Disclaimer:  This script is provided for you to use at your own risk.
# No warranty or promise of any kind is attached.
# You can really screw up your system by running this script.


# this test for a null value of $BASH identifies sh
# which is the most common case of not-bash
if [ -z "$BASH" ] ; then
  echo "Calling this script under sh will not work as well."
  echo "Either call as \"bash $0\" or do \"chmod u+x $0\" "
  echo "and then run it normally."
  exit
fi

TEXT_RESET='\e[0m'
TEXT_YELLOW='\e[0;33m'
TEXT_RED_B='\e[1;31m'

# this part is really just here for the sudo
# and we assume that
#  . sudo on your system stays cached (default 5min)
#  .
echo -e $TEXT_YELLOW
sudo echo "Begin Ubuntu update script ..."
echo -e $TEXT_RESET


sudo apt-get -y update
echo -e $TEXT_YELLOW
echo 'APT update finished...'
echo -e $TEXT_RESET

sudo apt-get -y dist-upgrade
echo -e $TEXT_YELLOW
echo 'APT distributive upgrade finished...'
echo -e $TEXT_RESET

sudo apt-get -y upgrade
echo -e $TEXT_YELLOW
echo 'APT upgrade finished...'
echo -e $TEXT_RESET

sudo apt-get -y autoremove
echo -e $TEXT_YELLOW
echo 'APT auto remove finished...'
echo -e $TEXT_RESET

# run the check shown in the MOTD to show the new status.
echo -e $TEXT_RED_B
/usr/lib/update-notifier/apt_check.py --human-readable
echo -e $TEXT_RESET

if [ -f /var/run/reboot-required ]; then
    echo -e $TEXT_RED_B
    echo 'Reboot required!'
    echo -e $TEXT_RESET
fi

# I find I'm not a huge fan of select here, might re-do this later
echo "Do you wish to reboot?"
select yn in "Yes" "No"; do
    case $yn in
        Yes ) sudo reboot;;
        No ) exit;;
        * ) echo "pick a number 1, 2"
    esac
done