update50

#!/bin/bash
#
# This is CS50 update!
#
# To run, execute "update50" at the command line.

echo -e "\nDO NOT CLOSE THIS WINDOW OR PUT YOUR COMPUTER TO SLEEP <3\n"
sleep 2

echo -e "\n\n\nUpdate50 - $(date -R)" | sudo tee -a /var/log/appliance50.log

echo 'Updating sources...'
# try to fix dpkg before updating
sudo dpkg --configure -a 2>&1 | sudo tee -a /var/log/appliance50.log > /dev/null
sudo apt-get update 2>&1 | sudo tee -a /var/log/appliance50.log
if [ $? -ne 0 ]
then
    echo 'Something went wrong! The output has been logged in /var/log/appliance50'
    exit 1
fi

echo 'Reinstalling appliance package...'
sudo apt-get -o Dpkg::Options::="--force-confnew" -o Dpkg::Options::="--force-overwrite" install --reinstall --yes --force-yes --assume-yes appliance50 2>&1 | sudo tee -a /var/log/appliance50.log
if [ $? -ne 0 ]
then
    echo 'Something went wrong! The output has been logged in /var/log/appliance50'
    exit 1
fi

echo 'Upgrading packages...'
# fix annoying samba conf issue
sudo rm -f /etc/samba/smb.*
sudo apt-get -o Dpkg::Options::="--force-confnew" -o Dpkg::Options::="--force-overwrite"  --yes --force-yes --assume-yes dist-upgrade appliance50 2>&1 | sudo tee -a /var/log/appliance50.log
if [ $? -ne 0 ]
then
    echo 'Something went wrong! The output has been logged in /var/log/appliance50'
    exit 1
fi

echo 'Reinstalling appliance package again...'
sudo apt-get -o Dpkg::Options::="--force-confnew" -o Dpkg::Options::="--force-overwrite" install --reinstall --yes --force-yes --assume-yes appliance50 2>&1 | sudo tee -a /var/log/appliance50.log
if [ $? -ne 0 ]
then
    echo 'Something went wrong! The output has been logged in /var/log/appliance50'
    exit 1
fi

echo 'Update complete!'