[Yum] How yum distingushes update packages from base packages

[seth vidal]

On Tue, 2008-04-08 at 12:02 -0400, P Li wrote:

> The problem is that when we ran "yum list" on the client machine, only
> the packages in the [updates] group were listed. The packages in the
> [base] group would not appear unless the [updates] stanza is disabled.
> We also tried using two repo files, still the packages in the [base]
> group would not be listed as "Available Packages" unless the repo file
> for [updates] is disabled.
> 


if you want to see all versions (including older ones) from repos you
need to make sure that:
showdupesfromrepos=1 is set in your yum.conf under [main]


> How does yum distinguish update packages from base packages? Version
> numbers? Timestamps?

version numbers.


-sv