# Can I have/use different Versions of rails in the same machine **URL:** \ **Category:** Rails\ **Created:** [June 17, 2010, 4:22pm UTC](https://www.ruby-forum.com/t/can-i-have-use-different-versions-of-rails-in-the-same-machine/190239 "2010-06-17T16:22:28Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![lakshmanan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/50afbb/32.png) [@lakshmanan](https://www.ruby-forum.com/u/lakshmanan)\ **Post date:** [June 17, 2010, 4:22pm UTC](https://www.ruby-forum.com/t/can-i-have-use-different-versions-of-rails-in-the-same-machine/190239/1 "2010-06-17T16:22:28Z")
I am actually reading a rails book that is written for rails 2.3.5. I want to test Rails 3 beta as well. Is it possible to have such a setup in my Mac OS leopard? I have tried with gem list -d rails. There are many versions stored in my mac but I don’t know how to use different version of rails while creating new applications with rails command. ---
**Author:** ![lakshmanan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/50afbb/32.png) [@lakshmanan](https://www.ruby-forum.com/u/lakshmanan)\ **Post date:** [June 17, 2010, 4:22pm UTC](https://www.ruby-forum.com/t/can-i-have-use-different-versions-of-rails-in-the-same-machine/190239/2 "2010-06-17T16:22:35Z")
Hi, It is possible to have different rails application on single machine. While creating rails application u just need to specify corrosponding rails version. $rails _version\_number_ -d database\_name application\_name For ex. $rails _2.3.5_ -d mysql temp ---
**Author:** ![lakshmanan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/50afbb/32.png) [@lakshmanan](https://www.ruby-forum.com/u/lakshmanan)\ **Post date:** [June 17, 2010, 4:26pm UTC](https://www.ruby-forum.com/t/can-i-have-use-different-versions-of-rails-in-the-same-machine/190239/3 "2010-06-17T16:26:22Z")
Thank you. Currently I have rails 2.3.8 set up in my mac. I want to install rails 3 beta as well and test it whenever I feel like. What command I should give to install rails 3. Is it just ’ gem install rails’ or … ? On Jun 14, 12:54 pm, Raghavendra J. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![lakshmanan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/50afbb/32.png) [@lakshmanan](https://www.ruby-forum.com/u/lakshmanan)\ **Post date:** [June 17, 2010, 4:27pm UTC](https://www.ruby-forum.com/t/can-i-have-use-different-versions-of-rails-in-the-same-machine/190239/4 "2010-06-17T16:27:01Z")
Hi, “gem install rails --prerelease” should install the current beta. You also need to make sure that you have the latest version of RubyGems with “gem update --system”. BTW. You can install any version of rails (and any version of any gem for that matter) specifically, by adding the "-v " to “gem install rails”, e.g. “gem install rails -v 2.3.8” Cheers, Frane ---
**Author:** ![lakshmanan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/50afbb/32.png) [@lakshmanan](https://www.ruby-forum.com/u/lakshmanan)\ **Post date:** [June 17, 2010, 4:27pm UTC](https://www.ruby-forum.com/t/can-i-have-use-different-versions-of-rails-in-the-same-machine/190239/5 "2010-06-17T16:27:02Z")
Hi first you install ruby 1.8.7 after that you type _gem install i18n tzinfo builder memcache-client rack rack-test rack-mount erubis mail text-format thor bundler_ then _gem install rails --pre_ .This will install rails 3.0beta ---
**Author:** ![lakshmanan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/50afbb/32.png) [@lakshmanan](https://www.ruby-forum.com/u/lakshmanan)\ **Post date:** [June 17, 2010, 4:35pm UTC](https://www.ruby-forum.com/t/can-i-have-use-different-versions-of-rails-in-the-same-machine/190239/6 "2010-06-17T16:35:20Z")
On Mon, Jun 14, 2010 at 4:16 PM, Colin L. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > I was under the impression that there were problems installing rails 2 > and 3 on the same PC. Is that not correct? If you use rvm you gain the ability to have separate sets of gems, named gem sets, etc. [http://rvm.beginrescueend.com/](http://rvm.beginrescueend.com/) – Greg D. [destiney.com](http://destiney.com) | [gregdonald.com](http://gregdonald.com) ---
**Author:** ![lakshmanan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/50afbb/32.png) [@lakshmanan](https://www.ruby-forum.com/u/lakshmanan)\ **Post date:** [June 17, 2010, 4:35pm UTC](https://www.ruby-forum.com/t/can-i-have-use-different-versions-of-rails-in-the-same-machine/190239/7 "2010-06-17T16:35:20Z")
On 14 June 2010 09:52, karnati kiran [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > gem install rails --pre .This will install rails 3.0beta I was under the impression that there were problems installing rails 2 and 3 on the same PC. Is that not correct? Colin