embs

mkdir frames
ffmpeg -i screencast.mp4 -r 5 'frames/frame-%03d.jpg'
cd frames
convert -delay 20 -loop 0 -layers Optimize *.jpg myimage.gif

embs

start = Step.create(name: 'Saudações, aventureiro!',
                      description: 'Cuidado por onde anda. Esta terra
                      está repleta de abismos e feras perigosas.')

precipice = Step.create(name: 'Você caiu num precipício :(',
                          description: 'Mais sorte na próxima vez...')

dragon = Step.create(name: 'Um dragão te tostou :(',
                       description: 'Nem todo dia é dia de caçador.')

embs

source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }

ruby '2.3.1'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.1'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use Puma as the app server

embs

Boot your system into a live CD. Mount your system into the live CD:

sudo mount /dev/sda1 /mnt
sudo mount --bind /dev /mnt/dev
sudo mount --bind /dev/pts  /mnt/dev/pts
sudo mount --bind /proc /mnt/proc
sudo mount --bind /sys  /mnt/sys
Log into the mounted system:

sudo chroot /mnt

embs

require 'socket'

webserver = TCPServer.new('127.0.0.1', 7777)

puts "Iniciando servidor."

while (session = webserver.accept)
   session.print "HTTP/1.1 200/OK\r\nContent-type:text/html\r\n\r\n"

   begin

embs

Moved

To https://github.com/embs/battle

embs

Start with Docker

I've started trying stuff within my hosting machine so I'd more confidently build an image later. It didn't pay off. Just type inside the Dockerfile instead of the terminal (shell).

Give apprentice steps

Nevermind the [state of the art][minimize-layers] when you're starting off:

embs

*.swp

embs

Dê boot a partir do S.O. Linux

Se você não tem Linux no computador, escolha uma distro (recomendo Debian -- que é a que eu uso -- mas a mais populares atualmente são a Linux Mint, o Ubuntu e o Fedora), baixe (ou baixe, baixe ou baixe) e instale (ou instale, instale ou instale).

Apesar de existirem tantos tutoriais e guias a respeito, o processo de instalação (pelo menos do Ubuntu e do Debian) é bastante simples e qualquer um que alguma vez já tenha instalado alguma coisa a p

embs

Authentication from Scratch with Rails 3.2.5

Rails 3.1 gives us a really easy way to authenticate users in our app: http_basic_authenticate_with. Using it, all we need to do is create a model for the user (certainly, User model :P) with an attribute called password_digest and some views feature for login and register users. After all, let's relax and let Rails do the hard work.

What we'll need

Gemfile

gem 'bcrypt-ruby', '~> 3.0.0'

Model

First at all, an User model which we can generate by following: rails g model user email:string password_digest:string and then add the following methodo call to generated class: has_secure_password