ytaniike

#!/usr/bin/perl
# displays the 256 colors specified in tmux's "colourNN" way.
# June, 1st 2011 by Yasunori Taniike (@ytaniike).

use strict;
use warnings;

my $prefix_bl = "\x1b[38;5;0;48;5;";
my $prefix_wl = "\x1b[38;5;15;48;5;";
my $suffix = "\x1b[0m";

beddari

#!/bin/bash
# Script for placing sudoers.d files with syntax-checking

if [ -z "$1" ]; then
  # Making a temporary file to contain the sudoers-changes to be pre-checked
  TMP=$(mktemp)
  cat > $TMP <<EOF
Cmnd_Alias VAGRANT_EXPORTS_ADD = /bin/su root -c echo '*' >> /etc/exports
Cmnd_Alias VAGRANT_NFSD = /etc/init.d/nfs-kernel-server restart
Cmnd_Alias VAGRANT_EXPORTS_REMOVE = /bin/sed -e /*/ d -ibak /etc/exports

fatbox

"""
This allows you to import Django modules into a Salt module
"""

import logging
import sys
import os

log = logging.getLogger(__name__)

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

GUI

#!/bin/bash
# Script for placing sudoers.d files with syntax-checking

# Making a temporary file to contain the sudoers-changes to be pre-checked
TMP=$(mktemp -t vagrant_sudoers)
cat /etc/sudoers > $TMP
cat >> $TMP <<EOF

# Allow passwordless startup of Vagrant when using NFS.
Cmnd_Alias VAGRANT_EXPORTS_ADD = /usr/bin/su root -c echo '*' >> /etc/exports

adrienbrault

#!/bin/sh

# Credits to:
#  - http://vstone.eu/reducing-vagrant-box-size/
#  - https://github.com/mitchellh/vagrant/issues/343

aptitude -y purge ri
aptitude -y purge installation-report landscape-common wireless-tools wpasupplicant ubuntu-serverguide
aptitude -y purge python-dbus libnl1 python-smartpm python-twisted-core libiw30
aptitude -y purge python-twisted-bin libdbus-glib-1-2 python-pexpect python-pycurl python-serial python-gobject python-pam python-openssl libffi5

gnarf

Install

Either copy the aliases from the .gitconfig or run the commands in add-pr-alias.sh

Usage

Easily checkout local copies of pull requests from remotes:

• git pr 4 - creates local branch pr/4 from the github upstream(if it exists) or origin remote and checks it out
• git pr 4 someremote - creates local branch pr/4 from someremote remote and checks it out

dustin

package main

import (
	"encoding/hex"
	"flag"
	"io"
	"io/ioutil"
	"log"
	"net"
	"os"

ashrithr

Introduction to Kafka

Kafka acts as a kind of write-ahead log (WAL) that records messages to a persistent store (disk) and allows subscribers to read and apply these changes to their own stores in a system appropriate time-frame.

Terminology:

• Producers send messages to brokers
• Consumers read messages from brokers
• Messages are sent to a topic

lost-theory

$ knife ssh -m "...every host in the network..." "sudo netstat -nutap" -a hostname > meganetstat.txt

$ python
>>> from collections import Counter as C
>>> HS = "...every host in the network...".split()
>>> ip = lambda s: s.split(":")[0]
>>> xs = [map(ip, [x[0], x[4], x[5]]) for x in [x.strip().split() for x in open("meganetstat.txt").readlines() if "tcp" in x] if len(x)>=6]
>>> ipmap = [(h, C([x[1] for x in xs if x[0] == h])) for h in HS]
>>> ipmapx = dict([(sorted([(x,y) for (x,y) in ip[1].items() if x.startswith("10.")], key=lambda t: -t[1])[0][0], ip[0]) for ip in ipmap])
>>> sorted(C(map(ipmapx.get, [x[2] for x in xs if x[2].startswith("10.")])).items(), key=lambda t: t[1])