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+====== Ruby on grml ======
+Ruby is a dynamic, open source programming language with a focus on simplicity and productivity. It has an elegant syntax that is natural to read and easy to write.
+===== Software =====
+The following Debian packages are shipped with grml out-of-the-box:
+  * dpkg-ruby: ruby interface for dpkg
+  * irb: Interactive Ruby
+  * rake: a ruby build program
+  * rdoc: Generate documentation from ruby source files
+  * ruby1.8-examples: Examples for Ruby 1.8
+  * ruby-prof: A fast code profiler for Ruby
+  * vim-ruby: Vi IMproved - enhanced vi editor - with Ruby support
+Not shipped with grml but interesting Debian packages/software anyway:
+  * rails: MVC ruby based framework geared for web application development
+  * ri: Ruby Interactive reference (ri)
+  * ruby-full: Ruby full installation
+  * ruby-pkg-tools: Tools for building Debian Ruby packages
+  * ruby1.9-examples: Examples for Ruby 1.9
+  * rubybook: the "Programming Ruby" book
+  * rubygems: package management framework for Ruby libraries/applications
+===== Programming Ruby with Vim =====
+See ':help if_ruby' in vim-ruby and [[http://vim-ruby.rubyforge.org/|vim-ruby.rubyforge.org]].
+===== Using irb =====
+irb is an [[http://en.wikipedia.org/wiki/Interactive_Ruby_Shell|Interactive Ruby shell]], tune its configuration via ~/.irbrc. The following configuration file it the one shipped with grml by default:
+<code>
+# we want to be able to use tab-completion in irb:
+require 'irb/completion'
+ARGV.concat [ "--readline", "--prompt-mode", "simple" ]
+# we want to get a history file of our session:
+module Readline
+  module History
+    LOG = "#{ENV['HOME']}/.irb-history"
+    def self.write_log(line)
+      File.open(LOG, 'ab') {|f| f << "#{line}\n"}
+    end
+    def self.start_session_log
+      write_log("\n# session start: #{Time.now}\n\n")
+      at_exit { write_log("\n# session stop: #{Time.now}\n") }
+    end
+  end
+  alias :old_readline :readline
+  def readline(*args)
+    ln = old_readline(*args)
+    begin
+      History.write_log(ln)
+    rescue
+    end
+    ln
+  end
+end
+Readline::History.start_session_log
+# simple prompt?
+# IRB.conf[:PROMPT_MODE] = :SIMPLE
+# prompt for easy copy/paste? start with irb --prompt xmp
+IRB.conf[:PROMPT][:XMP][:RETURN] = "\# => %s\n"
+# copy/paste from manpage:
+# IRB.conf[:IRB_NAME]="irb"
+# IRB.conf[:MATH_MODE]=false
+# IRB.conf[:USE_TRACER]=false
+# IRB.conf[:USE_LOADER]=false
+# IRB.conf[:IGNORE_SIGINT]=true
+# IRB.conf[:IGNORE_EOF]=false
+# IRB.conf[:INSPECT_MODE]=nil
+# IRB.conf[:IRB_RC] = nil
+# IRB.conf[:BACK_TRACE_LIMIT]=16
+# IRB.conf[:USE_LOADER] = false
+# IRB.conf[:USE_READLINE] = nil
+# IRB.conf[:USE_TRACER] = false
+# IRB.conf[:IGNORE_SIGINT] = true
+# IRB.conf[:IGNORE_EOF] = false
+# IRB.conf[:PROMPT_MODE] = :DEFALUT
+# IRB.conf[:PROMPT] = {...}
+# IRB.conf[:DEBUG_LEVEL]=0
+# IRB.conf[:VERBOSE]=true
+</code>
+===== Ressources =====
+==== english ====
+  * [[http://www.ruby-lang.org/en/|Ruby-Lang.org]]
+  * [[http://ruby-doc.org/|Ruby-Doc.org]]
+  * [[http://www.rubycentral.com/ref/|Ruby Class and Library Reference]]
+  * [[http://raa.ruby-lang.org/|RAA - Ruby Application Archive]]
+  * [[http://wiki.rubygarden.org/|Rubygarden Wiki]]
+  * [[http://www.headius.com/rubyspec/index.php/Main_Page|RubySpec Wiki]]
+  * [[http://www.rubygarden.org/Ruby/page/show/RubyStyleGuide|Ruby Style Guide]]
+  * [[http://rhg.rubyforge.org/|Ruby Hacking Guide]]
+  * [[http://blog.nicksieger.com/articles/2006/10/27/visualization-of-rubys-grammar|Visualization of Ruby's Grammar]]
+  * [[http://eigenclass.org/|eigenclass.org]] - a Ruby-centric blog and a repository of information and code
+  * [[http://ruby2cext.rubyforge.org/|Ruby2CExtension]] - a Ruby to C extension translator/compiler
+  * [[http://www.sapphiresteel.com/The-Little-Book-Of-Ruby|The Little Book Of Ruby]] - free PDF book
+  * [[http://poignantguide.net/ruby/|Why's (Poignant) Guide to Ruby]]
+  * [[http://rubynode.rubyforge.org/|RubyNode]] - a library that allows read only access to Ruby’s internal NODE structure
+==== german ====
+  * [[http://wiki.ruby-portal.de/Hauptseite|German Rubywiki]]
+  * [[http://forum.ruby-portal.de/|Ruby-Forum.de]]