[Tutor] Automatic updates for a program?

[Lan Rogers]

So I have a program I want to release, but it's still in early stages
without some of its planned functionality. I want to distribute
automatic updates. I'm working under the assumption that the easiest
way to do this is to just replace the old files with the new ones. My
questions is this: How do I replace a script that is running, with a
new version?