Many uses for this!
Say you install a large set of updates, so want to cross-check the old
list to the new one, in order to find out which new executables were
installed.
Or, perhaps less obscure, you might this list, without the `-printf`
part, to check their permission and ownership settings.
This was taken from my own notes amassed over several years. Commands
like these are a real time-saver.
A lot of people, I imagine, will probably use `-exec rm {} \+` which is
fine and all, but it's another process you'd have to launch, which
isn't necessary at all, unless you need certain `rm` functionality.