linyows

一旦テーブルの中身を把握したい時に使える一括CSV形式での出力

psql DATABASE_URL -c "select id,title from articles" -A -F,  | pbcopy 

• -A 位置揃えなし
• -F, カンマ区切り
• DATABASE_URL は postgres://user:password@host:port/database

linyows

Currently, there is an explosion of tools that aim to manage secrets for automated, cloud native infrastructure management. Daniel Somerfield did some work classifying the various approaches, but (as far as I know) no one has made a recent effort to summarize the various tools.

This is an attempt to give a quick overview of what can be found out there. The list is alphabetical. There will be tools that are missing, and some of the facts might be wrong--I welcome your corrections. For the purpose, I can be reached via @maxvt on Twitter, or just leave me a comment here.

There is a companion feature matrix of various tools. Comments are welcome in the same manner.

linyows

# target_version:
#   rubocop v0.34.2

# 自動生成されるものはチェック対象から除外する
AllCops:
  Exclude:
    - "vendor/**/*" # rubocop config/default.yml
    - "db/schema.rb"
  DisplayCopNames: true

linyows

shared_context "for_extending" do
  context "extended with MyModule" do
    before(:all){ subject.extend(MyModule) }
    it "should define #some_method" do
      subject.should respond_to(:some_method)
    end
    yield
  end
end

linyows

Vagrant Setup

This tutorial guides you through creating your first Vagrant project.

We start with a generic Ubuntu VM, and use the Chef provisioning tool to:

• install packages for vim, git
• create user accounts, as specified in included JSON config files
• install specified user dotfiles (.bashrc, .vimrc, etc) from a git repository

Afterwards, we'll see how easy it is to package our newly provisioned VM

linyows

# -*- mode: ruby -*-
# vi: set ft=ruby : 
# David Lutz's Multi VM Vagrantfile
# inspired from Mark Barger's https://gist.github.com/2404910

boxes = [
  { :name => :web,    :role => 'web_dev',     :ip => '192.168.33.1', :ssh_port => 2201, :http_fwd => 9980, :cpus =>4, :shares => true },
  { :name => :data,        :role => 'data_dev',         :ip => '192.168.33.2', :ssh_port => 2202, :mysql_fwd => 9936, :cpus =>4 },
  { :name => :railsapp,    :role => 'railsapp_dev',     :ip => '192.168.33.3', :ssh_port => 2203, :http_fwd => 9990, :cpus =>1}
]

linyows

class ApplicationController < ActionController::Base
  ...
  # FORCE to implement content_for in controller
  def view_context
    super.tap do |view|
      (@_content_for || {}).each do |name,content|
        view.content_for name, content
      end
    end
  end

linyows

# 2. Include Sweeping module in your controller(s) to have cache_sweeper
#    method to be avaliable, or right in ApplicationController so it will be
#    available in all controllers inheriting from it.

class ApplicationController < ActionController::Base
  include ActionController::Caching::Sweeping

  # ...
end

linyows

#!/usr/bin/env perl

=head1 Examples

  $ tail -f access_log    | perl colorize.pl
  $ plackup app.psgi 2>&1 | perl colorize.pl

=cut

use strict;

linyows

#!/usr/bin/env ruby

# usage:
#    taifu http://www.youtube.com/watch?v=KPWfBfFFrwsx
# taifu depends on VLC.app and rb-appscript gem

require 'rubygems'
require 'appscript'
require 'fileutils'