The following instructions make it easy to post to Twitter and Jaiku from the command line. The instructions were copied from the article "Ubuntu Unleashed: Howto Twitter From the Command Line in Ubuntu!" [ubuntu-unleashed.com] and modified to post via Rorbuilder's ProjectX API.

sudo apt-get install curl

sudo gedit /usr/bin/jaitwit

Now Paste this in gEdit and simply replace "YourUsername" with your username and "YourPassword" with your twitter passwd, then replace the Jaiku variables (YourUsername, YourPassword, YourCity, YourAccessKey) and ctrl-s to save, then alt-F4 to exit!

curl http://rorbuilder.info/api/projectx.cgi?xml_project=%3Cproject%20name=%22micro_blog%22%3E%3Cmethods%3E%3Cmethod%20name=%22post2jaiku%22%3E%3Cparams%3E%3Cparam%20var=%22user%22%20val=%22YourUsername%22/%3E%3Cparam%20var=%22msg%22%20val=%22`echo $@|tr ' ' '+'`%22/%3E%3Cparam%20var=%22location%22%20val=%22YourCity%22/%3E%3Cparam%20var=%22apikey%22%20val=%22YourAccessKey%22/%3E%3C/params%3E%3C/method%3E%3Cmethod%20name=%22post2twitter%22%3E%3Cparams%3E%3Cparam%20var=%22user%22%20val=%22YourUsername%22/%3E%3Cparam%20var=%22msg%22%20val=%22`echo $@|tr ' ' '+'`%22/%3E%3Cparam%20var=%22password%22%20val=%22YourPassword%22/%3E%3C/params%3E%3C/method%3E%3C/methods%3E%3C/project%3E -o /dev/null
echo Message Sent!

Then chmod for exec privileges:

chmod +x /usr/bin/jaitwit

Then from the CLI type jaitwit followed by your message.

jaitwit "message here without the quotes"

- getting started - (Using Ubuntu Linux 7.10)
1) Installed glade-3,libglade2-ruby
2) Executed glade-3

- Within glade-3 -
1) Selected from the glade-3 top menu View -> Palette appearance -> Text beside icons
2) Created a window (Toplevels)
3) Created a button on the window (Control and Display)
3) With button selected, from the properties panel I selected the Signals tab and chose 'clicked', then for the Handler -> on_button1_clicked and pressed enter.
4) With window select, from the properties panel I select the Signals tab and chose GtkWidget->delete-event, then for the Handler I typed on_quit and pressed enter.

- Generating and editing the code

-- From the command line -
1) Typed ruby-glade-create-template helloworld3.glade > helloworld3.rb

-- From the file helloworld3.rb - (see helloworld3.rb and how it relates to helloworld3.glade)
1) Implemented the initialise window routine
2) Implemented the button event handler

- Running the application
1) From the command line I typed ruby helloworld3.rb
2) stretched the window to a comfortable dimension.
3) clicked the button and observed the Window title change to 'Hello World!'

file: helloworld3.glade

#!/usr/bin/env ruby
#
# This file is generated by ruby-glade-create-template 1.1.4.
#
require 'libglade2'

class Helloworld3Glade
  include GetText

  attr :glade
  
  def initialize(path_or_data, root = nil, domain = nil, localedir = nil, flag = GladeXML::FILE)
    bindtextdomain(domain, localedir, nil, "UTF-8")
    @glade = GladeXML.new(path_or_data, root, domain, localedir, flag) {|handler| method(handler)}
    @window1 = @glade.get_widget("window1") # hand coded
    @window1.show # hand coded      
  end
  
  def on_button1_clicked(widget)
    #puts "on_button1_clicked() is not implemented yet." # removed this code by hand
    @window1.title = 'Hello World!' # hand coded  
  end
  def on_quit(widget, arg0)
    #puts "on_quit() is not implemented yet." # removed this code by hand
    Gtk.main_quit # hand coded
  end
end

# Main program
if __FILE__ == $0
  # Set values as your own application. 
  PROG_PATH = "helloworld3.glade"
  PROG_NAME = "YOUR_APPLICATION_NAME"
  Helloworld3Glade.new(PROG_PATH, nil, PROG_NAME)
  Gtk.main
end

file: helloworld3.glade

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE glade-interface SYSTEM "glade-2.0.dtd">
<!--Generated with glade3 3.4.0 on Tue Mar 18 17:39:53 2008 -->
<glade-interface>
  <widget class="GtkWindow" id="window1">
    <property name="events">GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK</property>
    <signal name="delete_event" handler="on_quit"/>
    <child>
      <widget class="GtkButton" id="button1">
        <property name="visible">True</property>
        <property name="can_focus">True</property>
        <property name="receives_default">True</property>
        <property name="events">GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK</property>
        <property name="label" translatable="yes">button</property>
        <property name="response_id">0</property>
        <signal name="clicked" handler="on_button1_clicked"/>
      </widget>
    </child>
  </widget>
</glade-interface>

This Ruby code produced a graph using gruff. The output shows a line graph [twitxr.com] for the different fruits. Source code origin: Gruff Update With Bar Graphs | Ruby on Rails for Newbies [rubyonrails.com]

require 'gruff'

g = Gruff::Line.new
g.title = "My Graph" 

g.data("Apples", [1, 2, 3, 4, 4, 3])
g.data("Oranges", [4, 8, 7, 9, 8, 9])
g.data("Watermelon", [2, 3, 1, 5, 6, 8])
g.data("Peaches", [9, 9, 10, 8, 7, 9])

g.labels = {0 => '2003', 2 => '2004', 4 => '2005'}

g.write('my_fruity_graph.png')

Note: I executed the code within an irb session on my Gentoo box. With Gentoo, Gruff was installed [gentoo-portage.com] using the command emerge -va gruff. I tried installing it on Ubuntu but ran into some difficulty, even with help from the article install rmagick ubuntu [dzone.com].

*udpate 21:48 24-Feb*

The following code does exactly as the same code above, however it uses XML to separate the data from the process, making it easier and more efficient to build graphs.

#!/usr/bin/ruby
# file: xml2gruff.rb

require 'rexml/document'
require 'gruff'
include REXML

class Xml2Gruff
  
  def initialize(filename)
    file = File.new(filename, 'r')
    doc = Document.new(file)
    # get the title
    @title = doc.root.elements['summary/title'].text
    
    @record = Hash.new
    # get each record
    doc.root.elements.each('records/item') {|item|
      avalues = Array.new
      item.elements.each('values/value') { |value| avalues << value.text.to_i }
      @record[item.elements['label'].text] = avalues
    }
    
    # get the summary labels
    @labels = Hash.new  
    doc.root.elements.each('summary/scale/label') {|l| @labels[l.elements['value'].text.to_i] = l.elements['title'].text} 
    
  end
  
  def save_line_graph(filename)

    g = Gruff::Line.new
    g.title = @title 
    @record.each {|label, data| g.data(label, data) }
    g.labels = @labels
    g.write(filename)

  end
end

if __FILE__ == $0
 x2g = Xml2Gruff.new('my_fruit.xml')
 x2g.save_line_graph('my_fruit2.png')
end

file: my_fruit.xml

<graph>
  <summary>
    <title>My Graph</title>
    <scale>
      <label><title>2003</title><value>0</value></label>
      <label><title>2004</title><value>2</value></label>
      <label><title>2005</title><value>4</value></label>
    </scale>
  </summary>
  <records>
    <item>
      <label>Apples</label>
      <values><value>1</value><value>2</value><value>3</value><value>4</value><value>4</value><value>3</value></values>
    </item>
    <item>
      <label>Oranges</label>
      <values><value>4</value><value>8</value><value>7</value><value>9</value><value>8</value><value>9</value></values>
    </item>
    <item>
      <label>Watermelon</label>
      <values><value>2</value><value>3</value><value>1</value><value>5</value><value>6</value><value>8</value></values>
    </item>
    <item>
      <label>Peaches</label>
      <values><value>9</value><value>9</value><value>10</value><value>8</value><value>7</value><value>9</value></values>
    </item>
  </records>
</graph>

Reference: gruff's gruff-0.2.9 Documentation [rubyforge.org]
to ruby rmagick image ubuntu gentoo magick graph chart gruff by jrobertson on Feb 24, 2008