josevalim

# In your test_helper.rb
class ActiveRecord::Base
  mattr_accessor :shared_connection
  @@shared_connection = nil

  def self.connection
    @@shared_connection || retrieve_connection
  end
end

jarib

pool = WebDriverPortPool.new(8)

port = pool.get
driver = Selenium::WebDriver::Driver.new(NoLockFirefoxBridge.new(:port => port))
# do some work
driver.quit
pool.release port

gkop

# in features/support/env.rb
require 'selenium/webdriver'

# we need a firefox extension to start intercepting javascript errors before the page
# scripts load
Capybara.register_driver :selenium do |app|
  profile = Selenium::WebDriver::Firefox::Profile.new
  # see https://github.com/mguillem/JSErrorCollector
  profile.add_extension File.join(Rails.root, "features/support/extensions/JSErrorCollector.xpi")
  Capybara::Selenium::Driver.new app, :profile => profile

mislav

Check build status of a project on the command line

Install (copy & paste):

curl -sL raw.github.com/gist/1676577/travis.rb > ~/bin/travis \
  && chmod +x ~/bin/travis

gem install hub | tail -2
ruby -e 'require "json"' 2>/dev/null || gem install json

selman

time ruby pinger.rb 
192.168.1.4
192.168.1.59
192.168.1.90
192.168.1.100
192.168.1.101
192.168.1.102
192.168.1.103
192.168.1.105
192.168.1.107

brandonb927

#!/bin/sh

###
# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer)
# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos
###

# Alot of these configs have been taken from the various places
# on the web, most from here
# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx

piscisaureus

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

kennethreitz

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

pcreux

# specs and cukes results are stored in JUnit format under test-reports
if (grep 'failures="[^0]"' test-reports/* || grep 'errors="[^0]"' test-reports/*); then
  curl -H "Authorization: token MY_TOKEN" --request POST --data '{"state": "failure", "description": "Failed!", "target_url": "${bamboo.buildResultsUrl}"}' https://api.github.com/repos/USER/REPO/statuses/${bamboo.repository.revision.number} > /dev/null
else
  curl -H "Authorization: token MY_TOKEN" --request POST --data '{"state": "success", "description": "Success!", "target_url": "${bamboo.buildResultsUrl}"}' https://api.github.com/repos/USER/REPO/statuses/${bamboo.repository.revision.number} > /dev/null
fi

somebody32

Введение

Начать стоит отсюда. Не пугайтесь то, что это книга по незнакомой OS, эти термины практически везде одинаковые и здесь они изложены в понятной для начинающих форме.

http://www.qnx.com/developers/docs/6.4.1/neutrino/getting_started/s1_procs.html

Прочесть нужно треть главы до подраздела "Starting a process", если С не пугает, читайте полностью. После прочтения вы будете понимать, что такое process, thread, mutex, priorites, semaphores, scheduler, contex-switch, kernel states.

Ruby