``` $ rpm -qf /var/cache filesystem-3.14-7.fc35.x86_64``` Top level ownership is not good enough because we have to be able to determine what is in use now vs what I can delete.
For this particular one, I always assumed that I can delete
anything in /var/cache. I think the current recommendation for
PackageKit hogging / space is still
rm -rf /var/cache/PackageKit