How can I correctly install Ruby on Rails, bundler, etc on a fresh Mac OS X?

Question

I recently reinstalled my Mac OS X (10.6.8) and want to install things properly this time. I had some trouble last time so I just want to set things up right.

In particular, I want to install Ruby on Rails, bundler, and so on... but when I do "gem install bundler" I get the following error:

c-69-181-106-62:~ dave$ gem install bundler
WARNING:  Installing to ~/.gem since /Library/Ruby/Gems/1.8 and
    /usr/bin aren't both writable.
WARNING:  You don't have /Users/dave/.gem/ruby/1.8/bin in your PATH,
    gem executables will not run.
ERROR:  Error installing bundler:
    bundler requires RubyGems version >= 1.3.6

I'm confused... can someone help me out, or point me to an article saying "OK, first, add this to this file, then download this, then do this..."?

Thanks

Answer 1

The first warning is because you aren't root. The second warning is because you don't have something in your PATH (but I don't think that will be a problem if you're root.) The third error is because you have an out-of-date RubyGems. Try this:

sudo gem update --system
sudo gem install bundler