#! /bin/bash

if [ "$1" == "-v" ]; then
        OUT_TO="/dev/stdout"
else
        OUT_TO="/dev/null"
fi

#echo "Apt-get update:"
apt-get update > $OUT_TO 2>&1 && echo 'apt-get update... OK!' || echo 'apt-get update... NOT OK!'
apt-get upgrade -d -y > $OUT_TO 2>&1 && echo 'fetching packages... OK!' || echo 'fetching files... NOT OK!'
echo 'writing the upgrade list...'
apt-show-versions -u > /tmp/UpgradeList
if [ -s /tmp/UpgradeList ]
    then  echo "Upgradeable packages:"
          cat /tmp/UpgradeList
else echo 'You are already uptodate.'
fi
echo "======================================================="
echo ""