ツナでもわかるmruby [1回目：Hello World] ref: http://qiita.com/hiroeorz@github/items/112e5bfbb3ff4d9486bc

build_config.rb

conf.gembox 'full-core'

file0.txt

$ git clone https://github.com/mruby/mruby.git

file1.txt

$ cd mruby

file10.txt

$ mruby hello_world.rb
hello world

file11.txt

$ mrbc hello_world.rb
$ ls
hello_world.mrb hello_world.rb

file12.txt

$ mruby -b hello_world.mrb
hello world

file2.txt

>puts "Hello World"

Hello World
 => nil
> 

file3.txt

$ mkdir -p mruby-learn/hello_world
$ cd mruby-learn/hello_world

file4.txt

$ rake

file5.txt

$ mkdir -p /usr/local/mruby/bin
$ cp bin/* /usr/local/mruby/bin/
$ echo "export PATH=/usr/local/mruby/bin:\${PATH}" >> ~/.profile
$ source ~/.profile

file6.txt

$ mirb

file7.txt

$ mruby -b hello_world.mrb
hello world

file8.txt

$ mkdir -p mruby-learn/hello_world
$ cd mruby-learn/hello_world

hello_world.rb

module Hello
  class World
    def say!
      puts "hello world"
    end
  end
end

hw = Hello::World.new
hw.say!

mirb

> puts "Hello World"

Hello World
 => nil