On Mon, 4 Apr 2016 15:50:05 -0700
Samuel Sieb wrote:
This will give you all the packages that were installed on the
original
system, but not on the current install.
Of course, the more releases you are skipping over, the more
rpms will have decided to change names, so this doesn't
always work, but it does help.
Another thing you can do is rpm -q --list for each rpm to generate
a big list of the files owned by every rpm, then if you can't find
the rpm under the old name, you can try installing a particular
file name to see if maybe the files still exist, and just the
package name changed.