#!/usr/bin/env ruby
require 'rubygems'
require 'pony'
 
hostname = `hostname -f`.strip
disk_usage = `df -i`
disks = disk_usage.split(/\n/)
disks.shift
body = ""
disks.each do |disk|
  disk = disk.scan(/(\w+|\W+\w+\b.*?) .* (\d+)% (.*)/)[0]
  body = body + "Device #{disk[0]} mounted on #{disk[2]} - #{disk[1]}%" + "\n" if disk[1].to_i > 80
end
 
unless body.empty?
  Pony.mail(:to => 'you@example.com', :via => :smtp,
            :subject => "Houston, we have a problem at #{hostname}", :body => body,
            :via_options => {
              :address              => 'smtp.gmail.com',
              :port                 => '587',
              :enable_starttls_auto => true,
              :user_name            => 'user',
              :password             => 'pass',
              :authentication       => :plain,
  })
end

require 'irb/completion'
require 'irb/ext/save-history'
 
IRB.conf[:SAVE_HISTORY] = 1000
IRB.conf[:HISTORY_FILE] = "#{ENV['HOME']}/.irb-save-history"
puts "History configured."
 
# auto-indent
IRB.conf[:AUTO_INDENT]=true
puts "Auto-indent on."
 
require 'rubygems'
require 'map_by_method'
require 'what_methods'
require 'pp'
require 'wirble'
 
THEME_FOR_WHITE_BKG = {
      # delimiter colors
      :comma              => :purple,
      :refers             => :blue,
 
      # container colors (hash and array)
      :open_hash          => :red,
      :close_hash         => :red,
      :open_array         => :red,
      :close_array        => :red,
 
      # object colors
      :open_object        => :dark_gray,
      :object_class       => :purple,
      :object_addr_prefix => :blue,
      :object_line_prefix => :blue,
      :close_object       => :dark_gray,
      # symbol colors
      :symbol             => :black,
      :symbol_prefix      => :light_gray,
 
      # string colors
      :open_string        => :blue,
      :string             => :dark_gray,
      :close_string       => :blue,
 
      # misc colors
      :number             => :black,
      :keyword            => :brown,
      :class              => :red,
      :range              => :blue,
    }
 
#Wirble::Colorize.colors = THEME_FOR_WHITE_BKG
Wirble.init(:skip_prompt=>true,:skip_history=>true)
Wirble.colorize

gem install sinatra

require 'rubygems'
require 'sinatra'
 
use Rack::Auth::Basic do |username, password|
  username == 'fu' && password == 'bar'
end
 
get '/' do
  ...
end