install-os-updates.sh

#!/bin/bash

read -e -p "Do you wish to run autoremove? " -i "yes" answer
if [ "$answer" = "yes" ]; then
   sudo apt-get autoremove;  # Remove deprecated packages
fi

read -e -p "Fetch the list of updates available? " -i "yes" answer
if [ "$answer" = "yes" ]; then
  sudo apt-get update;        # Fetches the list of available updates
fi

read -e -p "Do you wish to upgrade the current packages? " -i "yes" answer
if [ "$answer" = "yes" ]; then
      sudo apt-get upgrade;       # Strictly upgrades the current packages
fi

read -e -p "Do you wish to install updates? " -i "yes" answer
if [ "$answer" = "yes" ]; then
   sudo apt-get dist-upgrade;  # Installs updates (new ones) 
fi