James, you need to paste exactly what you see on the terminal. Copy the text from your console and then use the quote icon above the message box to show us what you get:

What I paste is exactly from the terminal. or am I missing something here?

then this is NOT a "dnf" VS. "yum" issue
but not understanding the "su" command

please see the manual page
the "-c" option is not really used

also using "su" without the "-" ( this is DIFFERENT than the -c)
will cause update issues

"su" = root but with YOUR normal user $PATH
"su - " = root but with ROOTS!!!! $PATH
( "su - " is a shortcut for "su -l root " )

the two are very different

Hi,
Sorry to be a pain...I'm still not totally getting it. From the very little I know, I never liked using
su -c 'yum update' (I got it off this forum months ago)
to get updates...but, it is the only thing that works, ..so far unless, when new updates are available, I use dnf update and does it for me.

So, (keeping in mind, I open a terminal, and first thing I do is a su root and supply password)
dnf update should do the same thing as yum update ? (realizing yum is depreciated and directs to dnf?)
So basically dnf update = yum update
but, does su -c 'dnf update' do the same as su -c 'yum update' ?(realizing from what you say, this entire command phrase is wrong, I'm already in root so no need)


I know, I know read man su, but, for me, seeing specific examples work better .

Yus

Yus