Start synaptic automatically with boot or login
Set Synaptic updater to check for updates, see screenshot
--or leave it running and save that as your session
The normal method of automation in Linux is using cron to automatically take some action at some pre-determined interval..
--if you leave your system on all the time, otherwise there is a time sync problem; it works well for serversCron, and apthttp://www.unixmen.com/linux-tutorials/ ... g-cron-apt
Terminal, apt search update
p update-apt - A nightly Debian update tool.The all-in one method via synaptic
p update-manager - GNOME application that manages apt updates
p update-notifier - Daemon which notifies about package update
--if you have the required system utility installedhttps://help.ubuntu.com/community/SynapticHowto
Synaptic works hand-in-hand with Update-Notifier and Update-Manager to inform you about updates to the software installed on your system.
Update-Notifier displays an icon in the notification area when updates are available. It will display a pop-up message and an icon in the notification area on your GNOME desktop.
--they changed its operation (update-notifier) on Ubuntu 9.04, apparently it had annoying update notification pop-ups for some people..
Screenshot, Synapatic (Package manager) Preferences..