On 07/03/15 05:21, Tom H wrote:
> On Fri, Mar 6, 2015 at 11:07 PM, Yasha Karant <[log in to unmask]> wrote:
>> On 03/06/2015 06:57 PM, Phil Wyett wrote:
>>> On Fri, 2015-03-06 at 15:46 -0800, Yasha Karant wrote:
>>>>
>>>> I attempted to update a SL 7 system using the Add/Remove Software GUI
>>>> update feature.  The update fails with:
>>>>
>>>> Test Transaction Errors:
>>>> file /sbin/extlinux from install of
>>>> syslinux-5.10-1.el7.rfx.x86_64 conflicts with file from package
>>>> syslinux-extlinux-4.05-8.el7.x86_64
>>>
>>> You are trying to update with syslinux from RPM Forge (a third party
>>> repo). Are you sure you want this package to try install?
>>
>> If I correctly understand you, one of the repos that I needed to install in
>> my Add/Remove software (and yum) database was RPM Forge -- presumably for
>> some application (or development environment) that I needed and that was not
>> building easily from source.  Thank you for identifying the repository.  (Is
>> there a list of which RPM comes from which repo?  That is, other than by
>> prior knowledge and inspection, is there any clean/clear mechanism to
>> identify .rfx. as RPM Forge, etc.?)
>>
>> Thus, if I "deactivate" RPM Forge for now via the Add/Remove GUI, the update
>> should work.  I will not be at my machine until Monday next, but I shall
>> test this idea then.
>
> If you need RF packages, you could look into "exclude" and
> includepkgs" in "yum.conf".
>
> You can list the provenance of your packages with
>
> rpm -qa --qf '%{NAME} %{VENDOR}\n'
>

... and this link might save a little experimentation.

http://www.gossamer-threads.com/lists/mythtv/users/579285#579285