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class Smokers < ActiveRecord:: Base
  belongs_to :heart_failure_statistics
  has_many :cigarettes
  attr_accessor :mins_since_last_puff

  before_validation :check_cigarettes

  def smoke?
    if mins_since_last_puff >= 60
      print("Smoke?")

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Multiple SSH Keys settings for different github account

create different public key

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "your_email@youremail.com"

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# I was trying to connect my Edimax Wifi dongle to my raspberrypi
# I tried configuring it using the following llink
# http://www.savagehomeautomation.com/projects/raspberry-pi-installing-the-edimax-ew-7811un-usb-wifi-adapte.html
# but Edimax would not connect to my router
# after refering to the following link
# http://www.cyberciti.biz/faq/debian-linux-wpa-wpa2-wireless-wifi-networking/
# I was able to connect make the raspberrypi connect to the router.


# this is how my /etc/network/interfaces looks like on my raspberrypi

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{
    "Monday": [
        [
            "00:00",
            "07:00"
        ],
        [
            "17:00",
            "24:00"
        ]

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#!/bin/bash

echo "*******************************************"
ps -aef | wc -l
echo "*******************************************"
sudo nmap -sS 127.0.0.1
echo "*******************************************"

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<link rel="import" href="../polymer/polymer.html">

<polymer-element name="my-element">

  <template>
    <style>    
      :host {
        position: absolute;
        width: 100%;
        height: 100%;

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How to sync Local Folder with S3

s3cmd --configure
give the aws key and the secret key

options required
* --skip-existing
* --progress

So

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  \l - to list all the databases
  \connect <dbname> - connect to the db
  \dt - list all the tables in the current DB

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 du -chs *

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http://stackoverflow.com/questions/22922891/vagrant-ssh-authentication-failure/23554973#23554973