camillol

#include <unistd.h>
#include <CoreServices/CoreServices.h>
#include <ApplicationServices/ApplicationServices.h>

typedef int CGSConnection;
extern OSStatus CGSGetWorkspace(const CGSConnection cid, int *workspace);
extern OSStatus CGSSetWorkspace(const CGSConnection cid, int workspace);
extern CGSConnection _CGSDefaultConnection(void);

int get_space_id(void);

jcromartie

#!/usr/bin/env ruby
# -*- coding: utf-8 -*-

# prints a sparkline in the terminal using the supplied list of numbers
# examples:
#   spark.rb 10 20 30 100 90 80
#   spark.rb 1 2 0.4 0.1 1.3 0.7

@ticks = %w[▁ ▂ ▃ ▄ ▅ ▆ ▇]
values = ARGV.map { |x| x.to_f }

robinsmidsrod

Add the following chunk to your existing ISC dhcpd.conf file.

if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.smidsrod.lan/boot.ipxe";
}
else {
    filename "undionly.kpxe";
}

(or see https://gist.github.com/4008017 for a more elaborate setup

dz0ny

## Setup java

if [ `uname -m` == 'x86_64' ]; then
 PATH="/usr/lib64/jvm/java-7-oracle/jre/bin/"
 JAVA_HOME="/usr/lib64/jvm/java-7-oracle/"
else
 PATH="/usr/lib/jvm/java-7-oracle/jre/bin/"
 JAVA_HOME="/usr/lib/jvm/java-7-oracle/"
fi

deoxxa

64617461 // "data"
0a000000 // 10 (elements?)
7f000000 // 127 (somehow related to length...?)
000100040800000000 // no idea
ffffffbb // ffffffbb shows up 10 times, same as the "element count" value above
ffffffe4 // seems to mark the beginning of a field? maybe?
000600000000000000000200041800000003
ffffffbb
ffffffe4
0041006e0069006d0065002d0045006d00700069007200650000 // ucs2-be/utf16-be string terminated with a null character

robinsmidsrod

ddns-update-style none;
deny bootp; #default
authoritative;

include "/etc/dhcp/ipxe-option-space.conf";

# GREEN (private network)
subnet 10.1.1.0 netmask 255.255.255.0 {
    range 10.1.1.100 10.1.1.199;
    option subnet-mask 255.255.255.0;

czarneckid

Zero downtime deploys with unicorn + nginx + runit + rvm + chef

Below are the actual files we use in one of our latest production applications at Agora Games to achieve zero downtime deploys with unicorn. You've probably already read the GitHub blog post on Unicorn and would like to try zero downtime deploys for your application. I hope these files and notes help. I am happy to update these files or these notes if there are comments/questions. YMMV (of course).

Other application notes:

• Our application uses MongoDB, so we don't have database migrations to worry about as with MySQL or postgresql. That does not mean that we won't have to worry about issues with the database with indexes being built in MongoDB or what have you.
• We use capistrano for deployment.

Salient points for each file:

ccarrasc

#!/bin/bash

# The current process has unrestricted/unlimited (root) access when the Effective User ID (EUID) is 0:
if [[ $EUID -ne 0 ]]; then
   echo -e "\e[1;31mThis script must be run as root or it will fail\e[0m" 1>&2
   exit 1
fi

# Make sure we are on CentOS
OS=`cat /etc/redhat-release | awk {'print $1}'`

carlessistare

# This number should be, at maximum, the number of CPU cores on your system. 
# (since nginx doesn't benefit from more than one worker per CPU.)
worker_processes 8;
 
 
# Determines how many clients will be served by each worker process.
# (Max clients = worker_connections * worker_processes)
# "Max clients" is also limited by the number of socket connections available on the system (~64k)
# run ss -s  and u'll see a timewait param
# The reason for TIMED_WAIT is to handle the case of packets arriving after the socket is closed. 

mraleph

$ cat test.js
function foo () { while (true) { } }
function bar () { return foo(); }
bar();
$ node test.js &
$ gdb attach $(pidof node)
0x00000bf778c63d5f in ?? ()
(gdb) b v8::internal::Runtime_StackGuard
Breakpoint 1 at 0x84a1f0
(gdb) print 'v8::V8::TerminateExecution'(0)