What does this mean in the Rails installation command?

rubyonrails-talk
1

In the Rails guides, it shows thee following for installing Rails:

gem install rails --pre

What is "--pre"?

Thanks.

2

abbreviation for “pre-release”. is a version to be installed

3

Luciano Sousa wrote:

abbreviation for "pre-release". is a version to be installed

Thanks. Can I specify a specific version.

For example gem install rails --version 2.3.5 (that is two '-' chars).

As for --pre, is it a specific version? Like for example when I used it it installed Rails3 and I think it was saying also beta4 or something?

Don't know that one.

Colin