Ahmed aonemd

VirtualBox Host-Only Static IP

My typical setup for a development box in VirtualBox uses two NICs. The first uses NAT to allow the box to communicate with the outside world through my host computer’s network connection. (NAT is the default, so shouldn't require any setup.) The second is a "host-only" connection that allows my host and guest to interact.

To create a host-only connection in VirtualBox, start by opening the preferences in VirtualBox. Go to the "Network" tab, and addd a Host-only Network. Modify the host-only network, and disable DHCP. Make a note of the IP address. (Feel free to set the IP address as well, if you like.)

Next, assign this host-only adapter to the virtual machine. Select the VM and press "Settings". Go to the "Network" tab, and select "Adpater 2". Enable the adapter, set it to a "Host-only Adapter", and select the adpater you created above.

Temporary

Once upon a time there was a user that wanted to install firefox.

The user tried to do pacman -S firefox but it didn't work. The all mighty pacman reported that firefox-3.2.4-1.i686.pkg.tar.gz could not be found on his mirror. So the user tried pacman -Sy firefox. It worked and the user rejoiced since he could once again go and troll /h/.

But all was not good. The user had made a grave error!

See, when the user told the almighty pacman to -Sy firefox, pacman did

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 = [email protected]: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:

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

	package main

	import (
	"bytes"
	"code.google.com/p/go.crypto/openpgp"
	"encoding/base64"
	"io/ioutil"
	"log"
	"os"
	)

	class Integer
	N_BYTES = [42].pack('i').size
	N_BITS = N_BYTES * 16
	MAX = 2 ** (N_BITS - 2) - 1
	MIN = -MAX - 1
	end

	p Integer::MAX #=> 4611686018427387903
	p Integer::MAX.class #=> Fixnum
	p (Integer::MAX + 1).class #=> Bignum

	# Call scopes directly from your URL params:
	#
	# @products = Product.filter(params.slice(:status, :location, :starts_with))
	module Filterable
	extend ActiveSupport::Concern

	module ClassMethods

	# Call the class methods with names based on the keys in <tt>filtering_params</tt>
	# with their associated values. For example, "{ status: 'delayed' }" would call

	require "active_record"

	namespace :db do

	db_config = YAML::load(File.open('config/database.yml'))
	db_config_admin = db_config.merge({'database' => 'postgres', 'schema_search_path' => 'public'})

	desc "Create the database"
	task :create do
	ActiveRecord::Base.establish_connection(db_config_admin)

	module ActiveRecord::UnionScope
	def self.included(base)
	base.send :extend, ClassMethods
	end

	module ClassMethods
	def union_scope(*scopes)
	id_column = "#{table_name}.#{primary_key}"
	sub_query = scopes.map { \|s\| s.select(id_column).to_sql }.join(" UNION ")
	where "#{id_column} IN (#{sub_query})"

	#!/usr/bin/env ruby

	require "webrick"

	=begin
	WEBrick is a Ruby library that makes it easy to build an HTTP server with Ruby.
	It comes with most installations of Ruby by default (it’s part of the standard library),
	so you can usually create a basic web/HTTP server with only several lines of code.

	The following code creates a generic WEBrick server on the local machine on port 1234,