how to completely remove rails 4.0.0.rc1 from Linux Mint v14 Nadia

Question

I decided to completely remove rails 4.0.0.rc1 and install rails 3.2.13.

I need instructions how to remove rails 4.0.0.rc1.

Answer 1

If you get the following error:

ERROR: While executing gem ... (Gem::InstallError) gem "rails" is not installed

Enter:
sudo gem uninstall rails -v 4.0.0
Then enter:
sudo gem uninstall railties

The command line will prompt you with something similar to this:
Select gem to uninstall:
1. railties-3.2.13
2. railties-4.0.0
3. All versions
select the version you want to uninstall by typing the corresponding number. In this case 2.

Answer 2

You can try this:

gem uninstall rails -v 4.0.0.rc1

Update:

gem uninstall railties

or if you already have more version installed:

gem uninstall railties -v 4.0.0.rc1

You can check which rails gem installed with gem list rails

Of course you can install after your desired gem:

gem install rails -v 3.2.13