How to upgrade Ruby to 2.0

Question

My ruby version is

ruby 1.9.3p374 (2013-01-15) [i386-mingw32]

and I am running under Windows 8 with mingw installed.

How can I upgrade

Answer 1

Pik let you play with and manage multiple versions and flavours of ruby on on your Windows box. I have chosen this way because I'm not sure that everything I need will work on the first try with the new version, hence I want also to keep prior versions.

The installation is also simple: if you haven't jet Pik see topic: "Install pik using rubygems" then "pik install ruby 2.0.0"

for example:

Before

C:\Sites>pik list
  160: jruby 1.6.0 (ruby 1.8.7 patchlevel 330) (2011-03-15 f3b6154) (Java H...
  165: jruby 1.6.5.1 (ruby-1.9.2-p312) (2012-01-25 fffffff) (Java HotSpot(T...
  167: jruby 1.6.7 (ruby-1.8.7-p357) (2012-02-22 3e82bc8) (Java HotSpot(TM)...
  187: ruby 1.8.7 (2011-02-18 patchlevel 334) [i386-mingw32]
  192: ruby 1.9.2p0 (2010-08-18) [i386-mingw32]
* 193: ruby 1.9.3p125 (2012-02-16) [i386-mingw32]

Install

C:\Sites>pik install ruby 2.0.0
** Downloading:  http://rubyforge.org/frs/download.php/76807/ruby-2.0.0-p0-i386-
mingw32.7z
...

After installation

C:\Sites>pik list
  160: jruby 1.6.0 (ruby 1.8.7 patchlevel 330) (2011-03-15 f3b6154) (Java H...
  165: jruby 1.6.5.1 (ruby-1.9.2-p312) (2012-01-25 fffffff) (Java HotSpot(T...
  167: jruby 1.6.7 (ruby-1.8.7-p357) (2012-02-22 3e82bc8) (Java HotSpot(TM)...
  187: ruby 1.8.7 (2011-02-18 patchlevel 334) [i386-mingw32]
  192: ruby 1.9.2p0 (2010-08-18) [i386-mingw32]
* 193: ruby 1.9.3p125 (2012-02-16) [i386-mingw32]
  200: ruby 2.0.0p0 (2013-02-24) [i386-mingw32]

Now we can use version 2.0.0

C:\Sites>pik use 200

C:\Sites>ruby --version
ruby 2.0.0p0 (2013-02-24) [i386-mingw32]

Wondering where the hell are the Ruby folders

 C:\>echo %HOME%
 C:\Users\rondinif

 C:\>where ruby 
 C:\Users\rondinif\.pik\rubies\Ruby-200-p0\bin\ruby.exe

 C:\>pik use 193
 C:\>where ruby 
 C:\RailsInstaller\Ruby1.9.3\bin\ruby.exe

 C:\>pik use 167
 C:\>where ruby 
     INFO: Could not find files for the given pattern(s).
 C:\>where jruby
 C:\Users\rondinif\.pik\rubies\JRuby-167\bin\jruby

and so on...