I want to change my OS X ruby version to 1.9 without using RVM

Question

yeah, you heard me right! I want to nix RVM for the time being and just run off of a system-level installation of Ruby 1.9.3

In other words, I want to just upgrade the old 1.8.7 version of ruby that came with my Mountain Lion installation to 1.9.3.

How would i do this?

Answer 1

You can install it with homebrew

$ brew install ruby

But I don't really think that it's a good idea. RVM is perfect tool for managing ruby installations and gemsets.

Answer 2

I highly recommend rbenv .

Even if you installed ruby manually or via homebrew, you can simply symlink it into rbenv and it will just work (TM):

cd ~/.rbenv/versions
ln -s /usr/local/Cellar/ruby/1.9.3-p125 1.9.3-p125
rbenv rehash

That's because rbenv doesn't modify things like the shebang line. It does only what it needs to and doesn't do any funny business with your shell.