nall is a utility to run your scripts ( for whatever ) every defined period. Here is description:
Description : Nall is a small gtk+ application that discretely fits into your freedesktop
: system tray (such as trayer).
: Its purpose is to spawn periodically every kind of script and display a
: one-line output in the tooltip window. The main usage of nall is monitoring or
: just notifying of almost everything (it just depends upon your imagination and
: ability to script).
For installation :
sudo yum install nall
Once done, you can start from terminal as “nall” or create a autostart file “~/.config/autostart/nall.desktop” to start it automatically when you log in :