Myuzu

# UPD from 2018:
# This gist was written for pre-1.0 version of Elixir and won't work on post-1.0 versions.
# You probably consider using something else!

defmodule SecureRandom do
  @moduledoc """
  Ruby-like SecureRandom module.

  ## Examples

jbgo

Free disk space when /boot is full (Ubuntu)

TL;DR

dpkg -l linux-image*
uname -r
sudo apt-get remove linux-image-2.6.32-{21,37,38,39,40,41,42,43,44}-server
sudo apt-get autoremove

rgreenjr

-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query 
FROM pg_stat_activity 
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' 
ORDER BY query_start desc;

-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query 
FROM pg_stat_activity 
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' 

afair

require 'resolv'

class Domain

  def mxers(domain)
    mxs = Resolv::DNS.open do |dns|
      ress = dns.getresources(domain, Resolv::DNS::Resource::IN::MX)
      ress.map { |r| [r.exchange.to_s, IPSocket::getaddress(r.exchange.to_s), r.preference] }
    end
    return mxs

sbusso

#!/usr/bin/env ruby
# == Simple Daemon
#
# A simple ruby daemon that you copy and change as needed.
# 
# === How does it work?
#
# All this program does is fork the current process (creates a copy of
# itself) then exits, the fork (child process) then goes on to run your
# daemon code. In this example we are just running a while loop with a

rubiojr

require 'fog'
require 'net/ssh'
require 'net/scp'


def upload_file(host, user, password, source, dest, print_progress = true)
  Net::SSH.start(host, user, :password => password) do |ssh|
    puts "Uploading file... (#{File.basename(source)})"
    ssh.scp.upload!(source, dest) do |ch, name, sent, total|
      if print_progress

kennethkalmer

require 'rubygems'
require 'eventmachine'

class SmtpSink < EM::Protocols::SmtpServer
  def receive_data_chunk( data )
    buffer.concat data
  end

  def receive_message
    puts

border

include $(GOROOT)/src/Make.inc

GOFMT=gofmt -spaces=true -tabindent=false -tabwidth=4

all:
	$(GC) jsontest.go 
	$(LD) -o jsontest.out  jsontest.$O

format:
	$(GOFMT) -w jsontest.go

asim

require 'rubygems'
require 'eventmachine'
require 'socket'

class Smtp < EM::P::SmtpServer
  require 'ostruct'
  @@received = 0
  def initialize(*args)
    super
    @cache = "/tmp/cache"    

zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')