# Install multiple versions of Rails on OSX **URL:** \ **Category:** Rails\ **Created:** [May 10, 2008, 6:34pm UTC](https://www.ruby-forum.com/t/install-multiple-versions-of-rails-on-osx/137249 "2008-05-10T18:34:01Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Justin\_Kozuch](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/a8b319/32.png) [@Justin\_Kozuch](https://www.ruby-forum.com/u/Justin_Kozuch)\ **Post date:** [May 10, 2008, 6:34pm UTC](https://www.ruby-forum.com/t/install-multiple-versions-of-rails-on-osx/137249/1 "2008-05-10T18:34:01Z")
Hi, I am currently running Rails 2.0.2 on my machine, but for the purposes of a AWDR 2nd Edition, I also need to run Rails 1.8.6. I looked around for a bit to find articles on how to do this, but I’m coming up short. Is there anyone out there that knows how to pull this off? Thanks, Justin ---
**Author:** ![Justin\_Kozuch](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/a8b319/32.png) [@Justin\_Kozuch](https://www.ruby-forum.com/u/Justin_Kozuch)\ **Post date:** [May 10, 2008, 6:41pm UTC](https://www.ruby-forum.com/t/install-multiple-versions-of-rails-on-osx/137249/2 "2008-05-10T18:41:04Z")
You mean 1.2.6? 1.8.6 is the version of Ruby, right? The 3rd edition of the book is now beta and the source code is compatible with Rails 2.0.2 already. ---
**Author:** ![Justin\_Kozuch](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/a8b319/32.png) [@Justin\_Kozuch](https://www.ruby-forum.com/u/Justin_Kozuch)\ **Post date:** [May 10, 2008, 6:44pm UTC](https://www.ruby-forum.com/t/install-multiple-versions-of-rails-on-osx/137249/3 "2008-05-10T18:44:38Z")
The second edition is based on Rails 1.2.3. You can specify the version when you install Rails. sudo gem install rails -v 1.2.3 –include-dependencies If you are new to Rails and don’t wanna be confused with multiple installations, I would suggest you uninstall Rails 2.0.2 first. sudo gem uninstall -v 2.0.2 rails ---
**Author:** ![Justin\_Kozuch](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/a8b319/32.png) [@Justin\_Kozuch](https://www.ruby-forum.com/u/Justin_Kozuch)\ **Post date:** [May 10, 2008, 9:31pm UTC](https://www.ruby-forum.com/t/install-multiple-versions-of-rails-on-osx/137249/4 "2008-05-10T21:31:21Z")
On May 10, 2008, at 10:28 AM, Justin Kozuch wrote: > Hi, > > I am currently running Rails 2.0.2 on my machine, but for the purposes > of a AWDR 2nd Edition, I also need to run Rails 1.8.6. > > I looked around for a bit to find articles on how to do this, but I’m > coming up short. > > Is there anyone out there that knows how to pull this off? If it’s just for learning, go get Locomotive. It’s a self-contained pre-2.0 rails installation. When you’re done with it, just drop the folder in the trash. If you also get MAMP you’ll have a self-contained Mysql installation too. ---
**Author:** ![Justin\_Kozuch](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/a8b319/32.png) [@Justin\_Kozuch](https://www.ruby-forum.com/u/Justin_Kozuch)\ **Post date:** [May 12, 2008, 8:14am UTC](https://www.ruby-forum.com/t/install-multiple-versions-of-rails-on-osx/137249/5 "2008-05-12T08:14:48Z")
Justin, Alternatively, you can _keep_ your 2.02 and install 1.2.3 on the same machine. To specify which rails version to use, enter this when creating the app: rails _1.2.3_ appname instead of rails appname \*keep the underscores around the version number. ./L ---
**Author:** ![Justin\_Kozuch](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/a8b319/32.png) [@Justin\_Kozuch](https://www.ruby-forum.com/u/Justin_Kozuch)\ **Post date:** [May 12, 2008, 4:08pm UTC](https://www.ruby-forum.com/t/install-multiple-versions-of-rails-on-osx/137249/6 "2008-05-12T16:08:27Z")
Awesome! I was trying to figure out how to create rails projects using a specific version number, thanks! I have 2.0.2 and 1.2.3 installed on the same machine and it seems to be working fine so far. - Justin ---
**Author:** ![Justin\_Kozuch](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/a8b319/32.png) [@Justin\_Kozuch](https://www.ruby-forum.com/u/Justin_Kozuch)\ **Post date:** [May 27, 2008, 10:36am UTC](https://www.ruby-forum.com/t/install-multiple-versions-of-rails-on-osx/137249/7 "2008-05-27T10:36:26Z")
Hi , i want the same. i install the rails versions 1.2.3 and 2.0.2 in my ubuntu8.4 . but i unable to create project with versions which i want. its creating with 2.0.2 only ,not able to creating with 1.2.3 version. i used the command : rails _1.2.3_ myapp . plz help me . is there anything wrong i did. ---
**Author:** ![Justin\_Kozuch](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/a8b319/32.png) [@Justin\_Kozuch](https://www.ruby-forum.com/u/Justin_Kozuch)\ **Post date:** [May 27, 2008, 10:36am UTC](https://www.ruby-forum.com/t/install-multiple-versions-of-rails-on-osx/137249/8 "2008-05-27T10:36:26Z")
Hi , but its not working for me . i am using rails versions 1.2.3 and 2.0.2 . but tha command rails _12.3_ appname not working for me. its creating only in rails 2.0.2 even if i gave 1.2.3 . my os is ubuntu8.4 . plz suggest solutin ---
**Author:** ![Justin\_Kozuch](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/a8b319/32.png) [@Justin\_Kozuch](https://www.ruby-forum.com/u/Justin_Kozuch)\ **Post date:** [May 10, 2008, 11:38pm UTC](https://www.ruby-forum.com/t/install-multiple-versions-of-rails-on-osx/137249/9 "2008-05-10T23:38:42Z")
Thanks! That worked like a charm. - Justin