On Tue, Oct 11, 2022 at 6:31 AM Tim via users <users@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
On Tue, 2022-10-11 at 08:38 +0100, Barry wrote:
> I guess this is a hang over from yum days. The problem I assume is
> how to update to the latest packages?
>
> With yum the yum clean all is required to get the latest meta data
> for the yum update.
> Today you can use dnf update —refresh to get the latest meta data for
> your update.
It was never required to do a clean all. A "yum update" or "dnf
update" was all that was ever required.
[…]
Telling people to *always* do a clean all (and other flushing options)
was stupid advise that some people promulgated ages ago. You should
only have to do that when something went wrong (e.g. your computer
crashed in the middle of doing something with yum or dnf).
It's the same kind of people that pushed that idea that also advise
people that the first thing to do with your installation is turn off
the firewall and SELinux. And I also have concerns that those people
have ulterior motives, rather than just being dense about things, they
might want to make it easier to hack everyone.
My colleagues who came to linux only because they need software that doesn’t support Windows, often fall victim to bad advice they find on the internet. They find professionally designed sites that promise simple, easy solutions to Linux problems, including the above. I The “solutions” come without explanations. One victim was getting access denied and found a site recommending “sudo chmod -R 777 /!”.
The linux software giving these people trouble is designed to be installed without elevated privileges, but many ignore the instructions and use “sudo install …”.
I used to teach “practicals” for workshops using the software in question. Spending the first couple sessions on linux basics made the remaining sessions flow more efficiently. You can’t cover very much in a few hours, so the main goal was to get participants in the habit of using reliable reference material like linuxcommand.org and the Debian manuals (the workshop used Ubuntu).
George N. White III
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