The below settings in my
.emacs make emacs (24.3) save multiple back-ups.
(setq delete-old-versions t kept-new-versions 6 kept-old-versions 2 version-control t)
However, I have little use for the newest 6 and oldest 2.
I'd like to distribute the back-ups. For example, keep the last saved version each day, and keep 5 versions for the present day.