samholst

#Signing AWS Requests By Using Signature Version 4
#http://docs.aws.amazon.com/general/latest/gr/sigv4_signing.html

require 'uri'
require 'openssl'
require 'net/http'
require 'cgi'

method = 'GET'
service = 'iam'

samholst

Setting up Ruby, Rails, Nginx, Passenger, PostgreSQL 9 on Ubuntu 12.04 LTS for Windows Azure

Last updated: 12/31/2013

Fix the locale issue

• Edit /etc/default/locale as sudo.
• Append LC_ALL="en_US.UTF-8" at the end of the file, save and quit.
• sudo locale-gen en_US en_US.UTF-8
• sudo dpkg-reconfigure locales

Install the necessary packages to install rbenv and build Ruby

samholst

class Fail2banNotifier
  def initialize(options)
    @default_options = options
    @default_options[:logfile] ||= Rails.root.join('log', 'fail2ban.log')

    # Roll over every 30M, keep 10 files
    @logger ||= Logger.new(@default_options[:logfile], 10, 30*1024*1024)
  end

  def call(exception, options={})

samholst

= form_for(@tank_configuration) do |f|
  - if @tank_configuration.errors.any?
    #error_explanation
      h2
        = pluralize(@tank_configuration.errors.count, "error")
        |  prohibited this tank_configuration from being saved:
      ul
        - @tank_configuration.errors.full_messages.each do |msg|
          li
            = msg

samholst

def queue_time(queue, cashier)
  
  # 每個位置一起減去當中最小的值
  def subtract_the_min(arr)
    arr.map do |ele|
      ele - arr.min
    end
  end

  # 如果 at_a_certain_moment 裡面有0 -> 找到這個位置，塞入下一個顧客 ->直到每個位置都不是0

samholst

# 1) Create your private key (any password will do, we remove it below)

$ cd ~/.ssh
$ openssl genrsa -des3 -out server.orig.key 2048


# 2) Remove the password

$ openssl rsa -in server.orig.key -out server.key

samholst

#!/usr/bin/perl
#
# Script to download/clone all of your Github repos
#
# Copyright Nicholas Humfrey, 22nd August 2017
#
# License: http://unlicense.org
#

use JSON;

samholst

#!/usr/bin/ruby
# Create display override file to force Mac OS X to use RGB mode for Display
# see http://embdev.net/topic/284710

require 'base64'

data=`ioreg -l -d0 -w 0 -r -c AppleDisplay`

edids=data.scan(/IODisplayEDID.*?<([a-z0-9]+)>/i).flatten
vendorids=data.scan(/DisplayVendorID.*?([0-9]+)/i).flatten

samholst

Problem

Installing mysql2 gem errors on MacOS Mojave.

Solution

Make sure openssl is installed on Mac via Homebrew.

brew install openssl

samholst

# config/initializers/activestorage.rb
Rails.application.config.to_prepare do
  # Provides the class-level DSL for declaring that an Active Record model has attached blobs.
  ActiveStorage::Attached::Macros.module_eval do
    def has_one_attached(name, dependent: :purge_later, acl: :private)
      class_eval <<-CODE, __FILE__, __LINE__ + 1
        def #{name}
          @active_storage_attached_#{name} ||= ActiveStorage::Attached::One.new("#{name}", self, dependent: #{dependent == :purge_later ? ":purge_later" : "false"}, acl: "#{acl}")
        end