I want to make some money by selling perl scripts!
BUT I don't know what kind of programs I should make.

Any Ideas?

I have tried to make a web community like HomeFree and WebHome, but I haven't touched the source code nearly 3-5 months, so I may not work on it anymore.
The File Manager I made is pretty good.

Features:
- Upload / Mirror / Edit / Create / Rename / Remove Files
- Create / Rename / Delete Directories
- CHMOD
- Upload Files in ASCII Mode
- Change Account Details and Password
- Backup & Restore Account Files

Really as a small time programmer you might be better off to make custom solutions for people on a case by case basis...

You can offer your services here in the Job forum, and related offers.... I don't offer my services here, so I don't know how well the responce is, but I'm sure people need custom scripting, but don't want to hire a full time programmer...

Make a user-friendly installer for FreeBSD. People will love you for it, and I'd be very surprised if you didn't get money thrown in your direction.