Install Ruby 1.9.3p392 on MacOSX by rbenv

rbenvInstallRuby193p392

% sudo brew install rbenv                                         
==> Downloading https://github.com/sstephenson/rbenv/tarball/v0.4.0
Already downloaded: /Library/Caches/Homebrew/rbenv-0.4.0.tgz
==> Caveats
To enable shims and autocompletion add to your profile:
  if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi

To use Homebrew's directories rather than ~/.rbenv add to your profile:
  export RBENV_ROOT=/usr/local/var/rbenv
==> Summary
🍺  /usr/local/Cellar/rbenv/0.4.0: 31 files, 152K, built in 2 seconds

% emacs .zshrc

## Add PATH for rbenv
#
export RBENV_ROOT=/usr/local/var/rbenv
export PATH="$RBENV_ROOT/bin:$PATH"
#eval "$(rbenv init -)"
if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi

% source .zshrc
% CONFIGURE_OPTS="--with-readline-dir=/usr/local --with-openssl-dir=/usr/local" rbenv install 1.9.3-p392
Downloading yaml-0.1.4.tar.gz...
-> http://dqw8nmjcqpjn7.cloudfront.net/36c852831d02cf90508c29852361d01b
Installing yaml-0.1.4...
Installed yaml-0.1.4 to /usr/local/var/rbenv/versions/1.9.3-p392

Downloading ruby-1.9.3-p392.tar.gz...
-> http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p392.tar.gz
Installing ruby-1.9.3-p392...
Installed ruby-1.9.3-p392 to /usr/local/var/rbenv/versions/1.9.3-p392

使用するRubyとそのバージョンを確認
% rbenv version
system (set by /usr/local/var/rbenv/version)

% ruby -v
ruby 1.8.7 (2012-02-08 patchlevel 358) [universal-darwin12.0]

インストールされているRubyのバージョンを確認
% rbenv versions
* system (set by /usr/local/var/rbenv/version)
  1.9.3-p392

使用するRubyを1.9.3に変更
% rbenv global 1.9.3-p392
% rbenv rehash

% rbenv version          
1.9.3-p392 (set by /usr/local/var/rbenv/version)

% ruby -v                
ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-darwin12.3.0]

日本語が使えるのか確認
% irb
irb(main):001:0> puts "あああ"
あああ
=> nil
irb(main):002:0> exit
% 

% tree -L 3 /usr/local/var/rbenv/
/usr/local/var/rbenv/
├── shims
│   ├── erb
│   ├── gem
│   ├── irb
│   ├── rake
│   ├── rdoc
│   ├── ri
│   ├── ruby
│   └── testrb
├── version
└── versions
    └── 1.9.3-p392
        ├── bin
        ├── include
        ├── lib
        └── share

7 directories, 9 files