Re: how to remove unwanted old kernels.

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On Fri, 2023-12-01 at 10:28 -0700, home user wrote:
> On 12/1/23 10:06 AM, Tim via users wrote:
> > On Fri, 2023-12-01 at 09:11 -0700, home user wrote:
> > > What is the current, simple, best practice, f38 way of removing
> > > the
> > > oldest memtest, both from the hard drive (if it's there) and from
> > > the grub menu?
> > 
> > It *ought* to be as simple as
> > 
> > dnf remove kernel.....
> > 
> > Where you use a specific kernel package version name.  And it does
> > everything.
> > 
> > Which is pretty much happens when you install a new kernel update
> > and
> > it removed the oldest one, automatically.
> > 
> > You can play with the DNF configuration files to specify how many
> > kernels (install-only packages) to keep on your system, and let it
> > automatically handle this for you.  But I always suggest keeping
> > more
> > than 3, I go for 5.  It might be some time before you notice that a
> > kernel update has caused a problem, and it's handy to be able to go
> > back more than just one, to test things.
> > 
> 
> Because of past problems with hard drive space when doing upgrades,
> I've got it set to keep 3.  (installonly_limit=3).
> How do I get the full "name" of the kernel to be deleted without re-
> booting (so I can see the grub menu)?

'rpm -qa kernel' will list all the installed kernels. The one to be
deleted on the next dnf update will be the oldest.

poc
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