[CentOS] Going back to a minimal system : strange problem

Fri Mar 2 03:33:52 UTC 2018
Gordon Messmer <gordon.messmer at gmail.com>

On 02/26/2018 09:25 AM, Nicolas Kovacs wrote:
>> I wonder if it might work to use a yum transaction, in which you
>> first remove everything (which avoids the need for the list
>> entirely), then adds the minimal package set, and then commits the
>> transaction...
> I only have a very vague notion of yum transactions, so I'll look into
> that and report back.

My idea was:

    # yum shell
     > transaction
     > remove *
    Skipping the running kernel: kernel-3.10.0-693.11.1.el7.x86_64
     > install @core
     > run

...but that doesn't work.  First, because it complains that @core has no 
packages to install, but second and more importantly, it appears that 
even if you get the package selection right it will remove and reinstall 
the packages.  I'm not positive that'll break, but offhand, it doesn't 
look like the transaction would have been a workable solution.  You 
know, in case you were curious.  :)