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Откат ошибочной команды git push --force

Иногда при работе с несколькими удалёнными репозиториями в git, может произойти страшное: git push --force в не тот remote и/или не в ту ветку.

Такое может случиться, например, если вы используете [Deis], в котором деплой запускается при git push нужного коммита в сборщик, когда при отладке деплоя после очередного git commit --amend по запарке вместо git push deis master --force делается просто git push --force. Упс.

Как результат, последние коммиты коллег безвозвратно потеряны, и вы чувствуете неотвратимость их ярости…

Но это git, а значит всё можно починить!

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Navigating

visit("/projects")
visit(post_comments_path(post))

Clicking links and buttons

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class Game
  include Celluloid
  include Celluloid::IO
  include Celluloid::Internals::Logger
  include Celluloid::Notifications
  extend Forwardable
  finalizer :finalizer
  def_delegators :int_state, :stage, :step, :total_steps, :step_status, :statements, :setting

  attr_accessor :name, :online

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Logging Rails 4 to Syslog, formatted w/ Logstash

Getting Started

Steps to get Rails 4 saving its output to Syslog via Rsyslog. This assumes you are on CentOS, but should be pretty adaptable to any other distribution. Ruby 2.0+ is also required.

1. Add the gems lograge and logstash-event to your Gemfile. Feel free to remove from production if you'd like to test it in development as well or something.
2. Update production.rb with the lograge settings and set the logger to Syslog::Logger.
3. Add the conf files to /etc/rsyslog.d/. /etc/rsyslog.conf should have $IncludeConfig /etc/rsyslog.d/*.conf enabled, so it will load any additional configs from /etc/rsyslog.conf.

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# A sample Gemfile
source "http://rubygems.org"

 gem "redis"
 gem 'eventmachine', :git => 'git://github.com/eventmachine/eventmachine.git'
 gem "em-hiredis"
 # gem "em-synchrony"
 gem "em-websocket"

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# spec/support/feature_macros.rb

module FeatureMacros
  extend ActiveSupport::Concern

  # get current domain ("lvh.me:12345")
  def domain(port = Capybara.current_session.server.try(:port) || 3000)
    port &&= ":#{ port }"
    "#{ DEFAULT_HOST }#{ port }"
  end

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# Build an inverted index for a full-text search engine with Redis.
# Copyright (C) 2009 Salvatore Sanfilippo. Under the BSD License.
# USAGE:
#
# ruby invertedindex.rb add somedir/*.c
# ruby invertedindex.rb add somedir/*.txt
# ruby search your query string

require 'rubygems'
require 'redis'

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#!/bin/sh
#
# init.d script for single or multiple unicorn installations. Expects at least one .conf 
# file in /etc/unicorn
#
# Modified by [email protected] http://github.com/jaygooby
# based on http://gist.github.com/308216 by http://github.com/mguterl
#
## A sample /etc/unicorn/my_app.conf
## 

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class CarConfig
  include ActiveSupport::Configurable
  config_accessor :brand
end

class Car
  attr_accessor :brand
  
  def initialize
    self.brand = self.class.config.brand