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名称 : crontab 
使用权限 : 所有使用者 
使用方式 : 
crontab file [-u user]-用指定的文件替代目前的crontab。 
crontab-[-u user]-用标准输入替代目前的crontab. 
crontab-1[user]-列出用户目前的crontab. 
crontab-e[user]-编辑用户目前的crontab. 
crontab-d[user]-删除用户目前的crontab. 
crontab-c dir- 指定crontab的目录。 
crontab文件的格式：M H D m d cmd. 

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# Chinese (China) translations for Devise(3.2.2)
# by Kenrick-Zhou (https://github.com/Kenrick-Zhou)
# https://gist.github.com/Kenrick-Zhou/7909822

zh-CN:
  devise:
    confirmations:
      confirmed: "您的帐号已经确认，您现在已登录。"
      send_instructions: "几分钟后，您将收到确认帐号的电子邮件。"
      send_paranoid_instructions: "如果您的邮箱存在于我们的数据库中，您将收到一封确认账号的邮件。"

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How to install PhantomJS on Ubuntu

Version: 1.9.7

Platform: x86_64

First, install or update to the latest system software.

sudo apt-get update

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tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

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before_save :encrypt_note
  def encrypt_note
    salt  = SecureRandom.random_bytes(64)
    key   = encrypt_key || ActiveSupport::KeyGenerator.new(ENV["SECRET_KEY"]).generate_key(salt) 
    crypt = ActiveSupport::MessageEncryptor.new(key)
 
    %w(client_note food medicines hydration md_appointments activity mood positive_thinking positive_action listener_note).each_with_index do |att|
 
      val = if !new_record? and send("#{att}_changed?")
        read_attribute(att.to_sym)

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** devise **
https://github.com/plataformatec/devise

rails generate devise:install
rails generate devise MODEL
config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
before_action :authenticate_user!
rails generate devise:views users
rails generate devise:controllers [scope]

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# username = "my_username"
# pwd = "my_password"        
# target_path = "my_target_path"
 
# saving auth cookie
system %Q{wget --save-cookies /tmp/cookie.txt --keep-session-cookies --post-data "username=#{username}&password=#{pwd}" -O - \
https://rubytapas.dpdcart.com/subscriber/login?__dpd_cart=d08391e6-5fe2-4400-8b27-2dc17b413027}
 
 
(25..600).each do |i|

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Capybara

save_and_open_page

Matchers

have_button(locator)

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• use scope

scope :trending, -> { |num = nil| where('started_trending > ?', 1.days.ago).
                                  order('mentions desc').
                                  limit(num) }
                                  
@tweets = current_user.tweets.unscoped.order(:status).limit(10)

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#Model 
@user.should have(2).children # check assosiation
@user.should have(1).error_on(:username) # Checks whether there is an error in username 
@user.errors[:username].should include("can't be blank")  # check for the error message 

expect { @user.save }.to change { User.count }.by(1) # or from(1).to(2)
expect { @user.save! }.to raise_error(ActivieRecord::RecordInvalid)

#More matchers
@person.should respond_to(:child?)