(responding to Ed)
So, the 28 is no longer being used and can be removed.
Done.
Since you're at F30 you should also have a
/var/cache/PackageKit/30
directory structure
which is now being used.
I don't have it. This might
relate to actions taken in my December 2018
thread "unwanted checks for updates". I'd like confirmation that I
don't have a problem here.
/var/cache/abrt-di/usr
That most likely contains a bunch of core files that are no longer
needed.
That directory looks huge and complex. I saw lots of links and lots of
source code (".c" and ".h" files). Would you like me to fpaste a
recursive long list (ls -alR) of it?
The key to getting good answers is to ask good questions.
Agreed, but it can be surprisingly difficult sometimes to figure out
what the good questions are! Reminds me of a professor in a class
asking if there were any questions. When there were none, he commented
he guessed we didn't know enough to know what to ask!
thanks,
Bill.