Comment 6 for bug 1639977

Verily verified for Yakkety.

Preparing to unpack .../unattended-upgrades_0.92ubuntu1.1_all.deb ...
Unpacking unattended-upgrades (0.92ubuntu1.1) over (0.92ubuntu1) ...
Processing triggers for ureadahead (0.100.0-19) ...
Processing triggers for systemd (231-9git1) ...
Setting up unattended-upgrades (0.92ubuntu1.1) ...
Replacing config file /etc/apt/apt.conf.d/50unattended-upgrades with new version
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
Processing triggers for man-db (2.7.5-1) ...
bdmurray@clean-yakkety-amd64:~$ ls /var/lib/apt/periodic/unattended-upgrades-stamp
ls: cannot access '/var/lib/apt/periodic/unattended-upgrades-stamp': No such file or directory
bdmurray@clean-yakkety-amd64:~$ sudo /usr/bin/unattended-upgrade
bdmurray@clean-yakkety-amd64:~$ ls /var/lib/apt/periodic/unattended-upgrades-stamp
/var/lib/apt/periodic/unattended-upgrades-stamp