upgrade

#!/bin/bash -e

#Install directory
DIR=$(dirname $(readlink -fn $0))
cd "$DIR"

USER='mike';
HOME="$(cat /etc/passwd | grep $USER | cut -d : -f 6)";

source ./pprint
export LOGFILE='/var/log/upgrade.log'
if [ -e $LOGFILE ] ; then rm $LOGFILE ; touch $LOGFILE; fi

SUB="Automatic Upgrade Failed"

installlog=/tmp/apt.log

info_log "Starting upgrade"
if sudo apt-get -q update | grep 'dpkg' ; then
    if ! sudo dpkg --configure -a ; then
        die_mail "$SUB" 'Failed to reconfigure'
    fi
fi

if ! sudo apt-get -y -q update ; then
    die_mail "$SUB" 'Could not update'
fi

if ! sudo apt-get -q -y dist-upgrade | tee $installlog ; then
    die_mail "$SUB" 'Failed to dist-upgrade'
elif ! sudo apt-get -q -y autoremove ; then
    die_mail "$SUB" 'Failed to cleanup any unneeded packages'
elif ! ( sudo apt-get -q -y autoclean && sudo apt-get -q -y clean ) ; then
    die_mail "$SUB" 'Failed to delete deb files'
fi

info_log "Automatic upgrade finished!"
mail_log "Finished upgrade!" "Upgrade succeeded."

if grep -q linux-image $installlog ; then
    shutdown -r "00:00" 'Rebooting at midnight to complete system update.'
fi