I have a script that I would like to run daily. I set it up in gnome-schedule to run every day at 00:00, and I'm wondering whether it will run on startup if my computer was not turned on at 00:00. If not, is there a way to make it do that?
Gnome-schedule is just a GUI to cron. Cron itself doesn't support what you're asking for but anacron does. Examples of its usage are in the link provided in Ward's comment.