Uninstalling rails completely

instructions.md

1. Check the rails version:

rails -v

2. Uninstall rails or a specific version of it.

gem uninstall rails -v 4.1.16

or

sudo gem uninstall rails -v 4.1.15

or just rails

gem uninstall rails

3. Check rails version it still not cleared.
4. Uninstall railties:

gem uninstall railties

or run with sudo

5. Run cleanup:

gem cleanup

6. Check rails version, hopefully it clear now🤞🏻