You have your Ubuntu 14.04 Trusty LTS server running and you do manual upgrades?
If you want to automate these steps you can enable automatic system updates (called unattended-upgrade) for your Ubuntu installation.
Run the following command:
sudo dpkg-reconfigure --priority=low unattended-upgrades
Now you will get and interactive dialog where you can enable unattended-upgrades:
Choose yes and from now on system updates are installed automatically daily on 6:25 am.