How to disable daily upgrade and clean on Ubuntu 16.04

At first I tried:

sudo apt-get remove unattended-upgrades

But it was insufficient. I also had to do this:

sudo systemctl stop apt-daily.timer
sudo systemctl disable apt-daily.timer
sudo systemctl disable apt-daily.service
sudo systemctl daemon-reload

Just a supplementary, first you can list the task:

sudo systemctl list-timers

and find apt-daily-upgrade.timer, then disable it

sudo systemctl stop apt-daily-upgrade.timer
sudo systemctl disable apt-daily-upgrade.timer
sudo systemctl daemon-reload

I simply removed package unattended-upgrades.

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