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List of fonts installed on machine -

convert -list font

Find out if particular font is installed

fc-list | grep -i arial

convert -list font | grep "Font:" | grep Arial

Install Typecatcher in Ubuntu

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Option 1st

Long way of doing things (new files need to be added to staging area before building the gem)

git add . && gem build my_gem.gemspec && gem install my_gem-0.0.0.gem

Option 2nd

If using Bundler to generate the gem (rake task does the same as above)

git add . && rake install

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1. Create a branch with the tag

git branch {tagname}-branch {tagname} git checkout {tagname}-branch

2. Include the fix manually if it's just a change ....

`git add .`
`git ci -m "Fix included" `
or cherry-pick the commit, whatever is easier
`git cherry-pick {num_commit}`

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require 'net/http'
require 'nokogiri'

# This script parse and download image files from html documents
def get_html(url)
  uri = URI(url)
  response = Net::HTTP.start(uri.host, uri.port,
                             :use_ssl => uri.scheme == 'https') do |http|
    resp = http.get(uri.path)
    case resp

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def sum_hour_glass(c, r, two_d_array)
  top = two_d_array[r][c..c+2].inject(:+)
  center = two_d_array[r +1][c+1]
  bottom = two_d_array[r+2][c..c+2].inject(:+) 
  top + center + bottom
end

def array2D(arr)
  max = -1.0/0.0
  arr.each_with_index do |row, r_i|

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class Node
  attr_accessor :value, :left, :right, :name

  def initialize(options={})
    @value = options[:value]
    @name = options[:name]
  end

  def children
    [@left, @right].compact

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class Heap
  def initialize(type = :min)
    @type = type
    if @type == :min
      @heap = [-1.0/0]
      @compare = ->(a,b) { (a <=> b) < 0 }
    elsif @type == :max
      @heap = [1.0/0]
      @compare = ->(a,b) { (b <=> a) > 0 }
    else

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Integrate Gem/Engine and main Rails app

Overview

• Paths
• Routes
• Add functionality to controller
• Improving (Extending or overriding) Engine functionality
• Helpers
• Assets

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#!/usr/bin/env ruby

require 'rubygems'
require 'aws-sdk'

class S3FolderUpload
  attr_reader :folder_path, :total_files, :s3_bucket, :include_folder
  attr_accessor :files

  # Initialize the upload class

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require 'rest-client'
RestClient.get(url, headers={})
RestClient.post(url, payload, headers={})