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require 'csv'
@servers =["server_ip1","server_ip2", "server_ip3"]

list = {}
host = []
result = {}


CSV.foreach("mx_records.csv") do |row|
	

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Commands examples

If the namespace is not used then the commands will perform on top of the default database. bundle exec rake db:create bundle exec rake db:migrate

By using the namespace we are going to use all the configuration for our alternate DB. bundle exec rake store:db:create bundle exec rake store:db:migrate

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Rails Models

Generating models

$ rails g model User

Associations

belongs_to

has_one

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class ApplicationController < ActionController::Base
  include Pundit

  # Verify that controller actions are authorized. Optional, but good.
  after_filter :verify_authorized,  except: :index
  after_filter :verify_policy_scoped, only: :index

  rescue_from Pundit::NotAuthorizedError, with: :user_not_authorized

  private

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# Permissions cheatsheet

`chmod [a]bcd`

* bit a — sticky:1/setgid:2/setuid:4 (optional, default: 0)
* bit b — owner    | x:1/w:2/r:4 - xw:3/xr:5/wr:6/xwr:7
* bit c — group    | x:1/w:2/r:4 - xw:3/xr:5/wr:6/xwr:7
* bit d — everyone | x:1/w:2/r:4 - xw:3/xr:5/wr:6/xwr:7

note: only file/dir owner can chmod it

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Update and upgrade the system

sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
sudo apt-get autoremove
sudo reboot

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require 'active_record'
require 'sqlite3'

ActiveRecord::Base.establish_connection(
  :adapter => "sqlite3",
  :database  => "teachers.db"
)

# Migration
ActiveRecord::Schema.define do

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#install

sudo apt-get install postgresql
sudo apt-get install libpq-dev
# for hstore
sudo apt-get install postgresql-contrib

##Modify /etc/postgresql/9.3/main/pg_hba.conf access control, local TCP access set to full trust

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Never touch your local /etc/hosts file in OS X again

To setup your computer to work with *.dev domains, e.g. project.dev, awesome.dev and so on, without having to add to your hosts file each time.

Requirements

• Homebrew
• Mountain Lion

Install

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#respond remote true redirect
  def create
    @post = Post.new(post_params)
    respond_to do |format|
      if @post.save
        format.js { redirect_to post_comments_path(@post), turbolinks: false}
        #or 
        #redirect_to post_comments_path(@post), status: 303, turbolinks: false
      else
        format.html { render :new }