[Koha] cron issue with Koha on Ubuntu

[Steve Nickerson]

I seem to recall seeing something about this perhaps but can't find the
solution.I have the package version of Koha 16.05.09.000 installed and
running on Ubuntu 16.04 LTS using the instructions at
https://wiki.koha-community.org/wiki/Koha_on_ubuntu_-_packages#Add_A_Koha_Co
mmunity_Repository.   Things seems to be working properly except that none
of the scheduled tasks are running (zebra re-indexing, email notices, etc.).
Neither root nor the Koha "owner" account have a crontab, so I'm wondering
if the install was supposed to have created one or not?   Can someone tell
me what the crontab(s) should look like and which user they should run
under, please?   Anyone have a URL with instructions already?

 

Thanks in advance!

Steve