* `download`: How often, in days, to run `apt-get upgrade --download-only`.
* `upgrade`: How often, in days, to upgrade packages included in the origins list.
* `autoclean`: How often, in days, to run `apt-get autoclean`.
* `download`: How often, in days, to run `apt-get upgrade --download-only`.
* `upgrade`: How often, in days, to upgrade packages included in the origins list.
* `autoclean`: How often, in days, to run `apt-get autoclean`.