mmcgrana

For each Ruby module/class, we have Ruby methods on the left and the equivalent
Clojure functions and/or relevant notes are on the right.

For clojure functions, symbols indicate existing method definitions, in the 
clojure namespace if none is explicitly given.  clojure.contrib.*/* functions can
be obtained from http://github.com/kevinoneill/clojure-contrib/tree/master,
ruby-to-clojure.*/* functions can be obtained from the source files in this
gist.

If no method symbol is given, we use the following notation:

carsonmcdonald

#
# Get development tools installed
#
sudo yum install -y git cvs zlib-devel
sudo yum groupinstall -y "Development Tools"

#
# Install RVM
#
bash < <(curl -s https://rvm.beginrescueend.com/install/rvm)

otobrglez

# 1) Put 's3' gem in Gemfile.
# 2) Create as3.yml configuration for S3
# 3) Create initializer for as3.yml
# 4) Make "assets" folder inside your bucket
# 5) After running task run "RAILS_ENV=production rake assets:precompile"
# 6) Invoke task by running "rake as3:upload"

namespace :as3 do  
  desc "Uploads compiled assets (public/assets) to Amazone AS3"
  task :upload do

rkh

require 'eventmachine'
require 'socket'
require 'kgio'

server = Kgio::TCPServer.new('0.0.0.0', 4242)

module Dispatch
  def notify_readable
    io = @io.kgio_tryaccept or return
    EventMachine.attach(io, Server)

mitchellh

Vagrant::Config.run do |config|
  # ...

  config.vm.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
end

avdi

# Do you ever define #method_missing and forget #respond_to? I sure
# do.  It would be nice if we could do them both at the same time.

module MatchMethodMacros
  def match_method(matcher, &method_body) 
    mod = Module.new do
      define_method(:method_missing) do |method_name, *args|
        if matcher === method_name.to_s
          instance_exec(method_name, *args, &method_body)
        else

bernerdschaefer

module WebmachineExample

  # GET /notes/1
  #   returns a 404
  # GET /notes/2
  #   returns a 200
  # POST /notes
  #   with an invalid content type
  #     returns a 415
  #     does not set the location

dutygeeks

class Optipng < Nanoc3::Filter
  identifier :optipng
  type       :binary

  def run(filename, params={})
    system(
      'optipng',
      '-quiet',
      '-o', params[:level].to_s,
      filename,

henrik

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

pmahoney

Orien is correct, it is the fork() system call triggered by ProcessBuilder or Runtime.exec or other means of the JVM executing an external process (e.g. another JVM running ant, a git command, etc.).

There have been some posts on the Jenkins mailing lists about this: Cannot run program "git" ... error=12, Cannot allocate memory

There is a nice description of the issue on the SCons dev list: fork()+exec() vs posix_spawn()

There is a long standing JVM bug report with solutions: Use posix_spawn, not fork, on S10 to avoid swap exhaustion. But I'm not sure if this actually made it into JDK7 as the comments suggest was the plan.

In summary, on Unix-like systems, when one process (e.g. the JVM) needs to launch another process (e.g. git) a system call is made to