Installing Rails ERROR: could not find rails locally or in a repository

I've been poking around the internet looking for a solution on this one... with no luck.. I'm new to rails... If anyone has an idea, I'd love to hear it. Much appreciated!

I enter:

LW:src liamwright$ sudo gem install rails --include-dependencies

And Get:

INFO:  `gem instal开发者_如何学Gol -y` is now default and will be removed
INFO:  use --ignore-dependencies to install only the gems you list
Bulk updating Gem source index for: http://gems.rubyforge.org
ERROR:  could not find rails locally or in a repository

I am running:

ruby 1.8.6 (2008-08-11 patchlevel 287) [universal-darwin9.0]
Mac OS X 10.5.8

I also tried:

gem sources -r gems.rubyonrails.org 

And Get:

source gems.rubyonrails.org not present in cache

---

Just to check...

...try doing a sudo gem update --system before installing Rails to make sure you have the latest RubyGems installed?

EDIT: Actually, if your RubyGems install is really old, you might need to follow the alternate directions on Gemcutter.

---

Might want to make sure you have the newest rubygems:

sudo gem install rubygems-update
sudo gem update --system

Then:

sudo gem install rails

---

I came across this solution on Albertux' blox. Running this script will fix it (It worked perfectly for me on an Ubuntu 9.10 machine):

#!/bin/bash
#(download the latest on http://rubyforge.org/frs/?group_id=126)
wget http://rubyforge.org/frs/download.php/43984/rubygems-update-1.3.0.gem
sudo gem install rubygems-update-1.3.0.gem
sudo update_rubygems
# now this work:
sudo gem update --system
echo "done."

---

I've just had the same problem trying to upgrade rubygems from 1.2.0 to 1.3.7.

Setp-1) So I just downloaded rubygems-update-1.3.7.gem from http://rubyforge.org/frs/?group_id=126

Setp-2) gem install rubygems-update-1.3.7.gem

Setp-3) update_rubygems

and it work for me.