ingeniarius

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

ingeniarius

Running redis using upstart on Ubuntu

I've been trying to understand how to setup systems from the ground up on Ubuntu. I just installed redis onto the box and here's how I did it and some things to look out for.

To install:

ingeniarius

#!/usr/bin/env ruby

require './dancer'
require './gangnam_style'

dancer = Dancer.new('PSY', GangnamStyle.new)
dancer.dance!

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$stack, $draws = [], {}

def method_missing *args
  return if args[0][/^to_/]
  $stack << args.map { |a| a or $stack.pop }
  $draws[$stack.pop(2)[0][0]] = args[1] if args[0] == :<
end

class Array
  def +@

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#
# Paperclip convert id => id_partition
#

require 'fileutils'
class PaperclipExtend
  def self.obtain_class
    class_name = ENV['CLASS'] || ENV['class']
    uploads_path = ENV['UPLOADS_PATH'] || ENV['uploads_path']
    raise "Must specify CLASS" unless class_name

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# download and build nginx from sources
https://gist.github.com/3083579

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require 'rubygems'
require 'nokogiri'
require 'eeepub'

DOC_TITLE = 'Ruby on Rails Guides'

def get_pages(src_dir)
  index_file = File.join(src_dir, 'index.html') 
  section = nil
  pages = [{ :section => section, :title => DOC_TITLE, :path => index_file }]

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# Date.parse() with Ruby 1.9 is now defaulting to the European date style where the format is DD/MM/YYYY, not MM/DD/YYYY
# patch it to use US format by default
if RUBY_VERSION >= '1.9'
  class String
    def to_date
      if self.blank?
        nil
      elsif self =~ /(\d{1,2})\/(\d{1,2})\/(\d{4})/
        ::Date.civil($3.to_i, $1.to_i, $2.to_i)
      else

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  $ cd /usr/src
  $ wget http://nginx.org/download/nginx-0.8.52.tar.gz
  $ tar xzvf ./nginx-0.8.52.tar.gz
  $ rm ./nginx-0.8.52.tar.gz

  $ gem install s3sync capistrano capistrano-ext passenger --no-ri --no-rdoc
  $ passenger-install-nginx-module
  # Automatically download and install Nginx?           2. No: I want to customize my Nginx installation
  # Where is your Nginx source code located?:           /usr/src/nginx-0.8.52
  # Where do you want to install Nginx to?:             /opt/nginx

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--- a/load.c	2010-10-23 05:36:38.000000000 -0400
+++ b/patchload.c	2011-06-05 08:58:00.000000000 -0400
@@ -40,14 +40,6 @@
     VALUE ary;
     long i;
 
-    for (i = 0; i < RARRAY_LEN(load_path); ++i) {
-	VALUE str = rb_check_string_type(RARRAY_PTR(load_path)[i]);
-	if (NIL_P(str) || !rb_is_absolute_path(RSTRING_PTR(str)))
-	    goto relative_path_found;