* `apt_package_updates`: The package names that are available for update. In Facter 2.0 and later, this will be a list type; in earlier versions, it is a comma-delimited string.
* `apt_update_last_success`: The date, in epochtime, of the most recent successful `apt-get update` run. This is determined by reading the mtime of /var/lib/apt/periodic/update-success-stamp.
+**Note:** The facts depend on 'update-notifier' being installed on your system. Though this is a GNOME daemon only the support files are needed so the package 'update-notifier-common' is enough to enable this functionality.
+
#### Hiera example
```