Andrey Snow andoriyu

CouchDB and multiple tags

The problem

Given a set of documents, each associated with multiple tags, how can I retrieve the documents tagged with an arbitrary set of tags?

My solution

Ruby 1.9.2 RVM w/iconv FreeBSD installation HOWTO

The Problem

Recently, trying to run some of my crutches (the Ruby thingies I use to help me sysadmining) under RVM, I've found that require 'iconv' doesn't work. Since I knew it's working in standard lang/ruby18 and lang/ruby19 ports I started to search where is the trap and have found that. Here's how.

Prerequisites

rvm installed
system ruby installed

create a vm

root@main:~ # vm create -t debian -s 100G nixos
root@main:~ # vm iso /stuff/downloads/nixos-graphical-18.03.132192.ce0d9d638de-x86_64-linux.iso 
root@main:~ # vm -f install nixos nixos-graphical-18.03.132192.ce0d9d638de-x86_64-linux.iso

boot the image

determine the 'init' executable path from '(cd0)/isolinux/isolinux.cfg'. look for a line which start's with: 'APPEND init=/nix/store/.....'

	set :rails_env, :production
	set :unicorn_binary, "/usr/bin/unicorn"
	set :unicorn_config, "#{current_path}/config/unicorn.rb"
	set :unicorn_pid, "#{current_path}/tmp/pids/unicorn.pid"

	namespace :deploy do
	task :start, :roles => :app, :except => { :no_release => true } do
	run "cd #{current_path} && #{try_sudo} #{unicorn_binary} -c #{unicorn_config} -E #{rails_env} -D"
	end
	task :stop, :roles => :app, :except => { :no_release => true } do

	# Backbone CoffeeScript Helpers by M@ McCray.
	# Source: http://gist.github.com/625893
	#
	# Use Backbone classes as native CoffeeScript classes:
	#
	# class TaskController extends Events
	#
	# class TaskView extends View
	# tagName: 'li'
	# @SRC: '<div class="icon">!</div><div class="name"><%= name %></div>'

	# NOTICE: to get Nginx+Unicorn best-practices configuration see the gist https://gist.github.com/3052776

	$ cd /usr/src
	$ wget http://nginx.org/download/nginx-1.2.1.tar.gz
	$ tar xzvf ./nginx-1.2.1.tar.gz && rm -f ./nginx-1.2.1.tar.gz

	$ wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.30.tar.gz
	$ tar xzvf pcre-8.30.tar.gz && rm -f ./pcre-8.30.tar.gz

	$ wget http://www.openssl.org/source/openssl-1.0.1c.tar.gz

	user app;
	worker_processes 2;

	error_log /home/app/logs/nginx.error.log info;

	events {
	worker_connections 1024;
	}

	#these are meant to be run in a REPL, and the java one in beanshell of something of the sort:
	#ruby
	[1,2,3,4].select{ \|x\| x.even? }

	#python
	[x for x in [1,2,3,4] if not x%2]
	#or, more norvingly
	filter(lambda x: not x%2, [1,2,3,4])

	#clojure

	$(document).ready(function() {

	// Support for AJAX loaded modal window.
	// Focuses on first input textbox after it loads the window.
	$('[data-toggle="modal"]').click(function(e) {
	e.preventDefault();
	var url = $(this).attr('href');
	if (url.indexOf('#') == 0) {
	$(url).modal('open');
	} else {

	# Licensed under CC BY 3.0 http://creativecommons.org/licenses/by/3.0/
	# Derived works must attribute https://gist.github.com/4492300 at the beginning, and the date.

	##################################################################
	Installing and Configuring SmartOS on a budget server (with a /29)
	##################################################################

	# if you find this gist useful, please star it

	# please be aware that budget hosting companies usually cut corners somewhere,