jexchan

A Capistrano Rails Guide

by Jonathan Rochkind, http://bibwild.wordpress.com

why cap?

Capistrano automates pushing out a new version of your application to a deployment location.

I've been writing and deploying Rails apps for a while, but I avoided using Capistrano until recently. I've got a pretty simple one-host deployment, and even though everyone said Capistrano was great, every time I tried to get started I just got snowed under not being able to figure out exactly what I wanted to do, and figured I wasn't having that much trouble doing it "manually".

jexchan

#!/usr/bin/env bash
apt-get -y update
apt-get -y install build-essential zlib1g-dev libssl-dev libreadline6-dev libyaml-dev make
cd /tmp
wget ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p374.tar.gz
tar -xvzf ruby-1.9.3-p374.tar.gz
cd ruby-1.9.3-p374/
./configure --prefix=/usr/local
make
make install

jexchan

Vagrant tutorial

• Slideshow structure
  • About me - Alex Dergachev, co-founder @evolvingweb (follow me gh/twitter: @dergachev)
  • The problem
  • The solution - Chef & Virtualbox & Vagrant
    • Benefits
      • repo + sql dump + cookbooks + ubuntu ISO = Drupal stack
      • prod vs dev consistency
• sysadmin code reuse

jexchan

require 'bundler/capistrano'
require "rvm/capistrano"

# Development server info
set :rvm_ruby_string, 'ruby-1.9.3-p286@global'
set :rvm_type, :system

set :application, "newclass.org"
set :scm, :git
set :repository,  "git@github.com:jexchan/re-education.git"

jexchan

%!TEX TS-program = xelatex
%!TEX encoding = UTF-8 Unicode

% 以上设定默认使用 XeLaTeX 编译，并指定 Unicode 编码，供 TeXShop 自动识别

% XeLaTeX 示例

\documentclass[12pt]{article}

% XeTeX 配合 fontspec 可以非常方便的设置字体 

jexchan

This post examines the features of [R Markdown](http://www.rstudio.org/docs/authoring/using_markdown) 
using [knitr](http://yihui.name/knitr/) in Rstudio 0.96.
This combination of tools provides an exciting improvement in usability for 
[reproducible analysis](http://stats.stackexchange.com/a/15006/183).
Specifically, this post 
(1) discusses getting started with R Markdown and `knitr` in  Rstudio 0.96;
(2) provides a basic example of producing console output and plots using R Markdown;
(3) highlights several code chunk options such as caching and controlling how input and output is displayed;
(4) demonstrates use of standard Markdown notation as well as the extended features of formulas and tables; and 
(5) discusses the implications of R Markdown.

jexchan

### R code from vignette source 'Presentation.Rnw'
### Encoding: UTF-8

###################################################
### code chunk number 1: init
###################################################
options(width=60)


###################################################

jexchan

## BASICS
  # Setup some scalars
  x <- 3
  y <- 4
  z <- sqrt(x*x + y*y)
  use.dots.in.names <- z - 5

  # Print out z
  print(z)
  # The default action is print()

jexchan

# ~/.osx — http://mths.be/osx

# root check
if [[ $EUID -ne 0 ]]; then
    echo "################################";
    echo "## YOU ARE NOT RUNNING AS ROOT #";
    echo "################################";
    echo "#";
    echo "# USAGE: sudo $0";
    exit;

jexchan

Frontend Development

Attention: if you attempt to fork this gist, github will think that you are a spammer and you will have to confirm that you are human with them. Apparantly there are too many links in this list. Also I update it rather frequently (see revisions on the left), so it's probably wise to not fork it anyway.

• Guides
  • Hack Design
  • Designer School
  • TheExpressiveWeb
  • Talks To Help You Become A Better Front-End Engineer In 2013
• Web Development Teaching Materials