At least 4... there is also PackageKit-cron , which does essentially the 
same thing in a slightly different way.

Bng


On 07/13/2012 11:59 AM, Konstantin Olchanski wrote:
> In the SL/SLC 5/6 world there are 3 nightly update scripts:
>
> yum.cron - is now part of the yum package (so count it as "standard", file bugs at bugzilla.redhat.com)
> yum-autoupdate-2 - comes with SL (written by Troy?) (complain to this list)
> yum-autoupdate-4 - comes with SLC (written at CERN?) (complain to CERN)