Absolute Newby stuck at the gate - can't start Server

Jay1607 used Ask the Experts™
I've decided to try my hand at Ruby on Rails.

Running Mac OSX, with Ruby 1.8.7

I am working through this tutorial: http://guides.rubyonrails.org/getting_started.html

Firstly, something a bit odd when creating the app.. the instructions said to enter: "$ rails new blog" in the terminal to create a new rails app.  When I did this, the app was created, but in a folder called "new".. so I deleted that and ran "$ ruby blog".. that created my app with all it's folders.. all good.

Now I need to run the WEBrick server.  Tut says, while in the apps folder, enter "$ ruby server", and this should start a web server, but it creates a new app in a new folder "server".

So.. to recap.

a. "$ rails new blog", creates a new app in a folder called "new".

b. "$rails blog", creates a new app in a folder called "blog".

c. $ rails server" creates a new app in a folder called "server" (but this is supposed to start the server).

Can anyone see what I am doing wrong?

Many Thanks in advance!

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Looks like you've got Rails 2 installed and using a Rails 3 tutorial.  Check this out by typing:
   Rails -v
to see what version is installed.  You can also type:
   gem list
and see what version of the Rails gems are installed (a 'gem' is ruby's name for modules that you can install.


aha.. you got it in one.. I knew this would be one of those embarrassing newby questions that i should have picked up as obvious.

running rails v 2.3.5

all the gems are the same.. actionmailer, actionpack etc.. are 2.3.5

How do I upgrade to rails v3 and all the gems to latest?

Thanks heaps JESii  !!


Just did a google search..

is it really this easy?

$ sudo gem update rails -y  ... to update rails

$ sudo gem update  ... to update all the gems

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OK.. not that easy.. I ran $ sudo gem update rails -y and got the following... version is still 2.3.5..

iMac:blog jason$ sudo gem update rails -y
Updating installed gems
Updating rails
Depending on your version of ruby, you may need to install ruby rdoc/ri data:

<= 1.8.6 : unsupported
 = 1.8.7 : gem install rdoc-data; rdoc-data --install
 = 1.9.1 : gem install rdoc-data; rdoc-data --install
>= 1.9.2 : nothing to do! Yay!
ERROR:  Error installing rails:
      multi_json requires RubyGems version >= 1.3.6
Gems updated: rake, rdoc
Installing ri documentation for rake-0.9.2...
Installing ri documentation for rdoc-3.9.4...
Installing RDoc documentation for rake-0.9.2...
Installing RDoc documentation for rdoc-3.9.4...



You're welcome; glad that helped... and thanks for the points!

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