hvanderlaan

Ansible vault example

New in Ansible 1.5, “Vault” is a feature of ansible that allows keeping sensitive data such as passwords or keys in encrypted files, rather than as plaintext in your playbooks or roles. These vault files can then be distributed or placed in source control. To enable this feature, a command line tool, ansible-vault is used to edit files, and a command line flag –ask-vault-pass or –vault-password-file is used. Alternately, you may specify the location of a password file or command Ansible to always prompt for the password in your ansible.cfg file. These options require no command line flag usage.

Requirements

• ansible > 1.5
• openssl
• inventory file
• host_vars or group_vars
• ansible directory best practices structure

fasiha

Introduction

I’m not very familiar with the aviation jargon (see FAA’s ADS-B FAQ), but ADS-B is a next-gen system where aircraft are equipped with transponders that periodically broadcast their own positions and receive the reports from both other aircraft (direct air-to-air) as well as air-traffic control (ATC) ground transmitters.

There are two separate ADS-B radio bands: the commercial aviation (CA) is at 1090 MHz while the general aviation (GA) is at 978 MHz. If I can be permitted a gross generalization—the former corresponds to big commercial jets and the latter to small private aircraft.

Because ADS-B is designed to democratize airspace situational awareness (in contrast to the older setup, like from films, where a central air-traffic controller is coordinating all these aircraft that can’t see each other), we can buy cheap RF receivers to pick up and decode the messages being broadcast by aircraft and ground towers to get our own picture of the

matthewspear

# Add these lines to ~/.bash_profile or ~/.zshrc:

# SelfControl
alias sc-read="defaults read org.eyebeam.SelfControl"
alias sc-run="sudo /Applications/SelfControl.app/Contents/MacOS/org.eyebeam.SelfControl $(id -u $(whoami)) --install"
alias sc-check="sudo /Library/PrivilegedHelperTools/org.eyebeam.SelfControl $(id -u $(whoami)) --checkup"

sc-set() 
{
  if [ "$1" = "" ]; then

Dhertz

Using Apple’s Aerial Screensavers on Ubuntu After coming across the [Aerial] (https://github.com/JohnCoates/Aerial) screensavers for Mac, and installing them, I decided that I had had enough of the graphics-demos of my Ubuntu Precise system. I hope to provide a simple guide on how to add them to your setup as well.

First, you need to install xscreensaver (for example with aptitude, but your distro should have it):

sudo aptitude install xscreensaver

cirrusUK

# ░░░░░░ ░░░░░░  ░░   ░░  ░░░░░░ ░░░░░░  ░░   ░░░░░░░░ ░░░░░░  ░░   ░░  ░░░░░ ░░░░░░
# ███╗   ██╗███████╗██╗    ██╗███████╗██████╗ ███████╗██╗   ██╗████████╗███████╗██████╗ 
# ████╗  ██║██╔════╝██║    ██║██╔════╝██╔══██╗██╔════╝██║   ██║╚══██╔══╝██╔════╝██╔══██╗
# ██╔██╗ ██║█████╗  ██║ █╗ ██║███████╗██████╔╝█████╗  ██║   ██║   ██║   █████╗  ██████╔╝
# ██║╚██╗██║██╔══╝  ██║███╗██║╚════██║██╔══██╗██╔══╝  ██║   ██║   ██║   ██╔══╝  ██╔══██╗
# ██║ ╚████║███████╗╚███╔███╔╝███████║██████╔╝███████╗╚██████╔╝   ██║   ███████╗██║  ██║
# ╚═╝  ╚═══╝╚══════╝ ╚══╝╚══╝ ╚══════╝╚═════╝ ╚══════╝ ╚═════╝    ╚═╝   ╚══════╝╚═╝  ╚═╝
# ░░░░░░ ░░░░░░  ░░   ░░  ░░░░░░ ░░░░░░  ░░   ░░░░░░░░ ░░░░░░  ░░   ░░  ░░░░░ ░░░░░░
#  ▓▓▓▓▓▓▓▓▓▓
# ░▓ author ▓ cirrus <cirrus@archlinux.info>

matthewbednarski

[{
    "Note": "The first two digits (ranging from 10–43) correspond to the province, while the last two digits correspond either to the city/delivery zone (range 01–50) or to the district/delivery zone (range 51–99). Afghanistan Postal code lookup",
    "Country": "Afghanistan",
    "ISO": "AF",
    "Format": "NNNN",
    "Regex": "^\\d{4}$"
}, {
    "Note": "With Finland, first two numbers are 22.",
    "Country": "Åland Islands",
    "ISO": "AX",
    "Format": "NNNNN",
    "Regex": "^\\d{5}$"
}, {
    "Note": "Introduced in 2006, gradually implemented throughout 2007.",
    "Country": "Albania",
    "ISO": "AL",
    "Format": "NNNN",
    "Regex": "^\\d{4}$"
}, {
    "Note": "First two as in ISO 3166-2:DZ",
    "Country": "Algeria",
    "ISO": "DZ",
    "Format": "NNNNN",
    "Regex": "^\\d{5}$"
}, {
    "Note": "U.S. ZIP codes (range 96799)",
    "Country": "American Samoa",
    "ISO": "AS",
    "Format": "NNNNN (optionally NNNNN-NNNN or NNNNN-NNNNNN)",
    "Regex": "^\\d{5}(-{1}\\d{4,6})$"
}, {
    "Note":

ecampidoglio

#!/bin/bash
# cpustatus
#
# Prints the current state of the CPU like temperature, voltage and speed.
# The temperature is reported in degrees Celsius (C) while
# the CPU speed is calculated in megahertz (MHz).

function convert_to_MHz {
    let value=$1/1000
    echo "$value"

juanje

This is a little trick I use to spin up the packages instalation on Debian/Ubuntu boxes in Vagrant.

I add a simple function that checks if a directory named something similar to ~/.vagrant.d/cache/apt/opscode-ubuntu-12.04/partial (it may have another path in Windows or MacOS) and create the directory if it doesn't already exist.

def local_cache(basebox_name)
  cache_dir = Vagrant::Environment.new.home_path.join('cache', 'apt', basebox_name)
  partial_dir = cache_dir.join('partial')
  partial_dir.mkdir unless partial_dir.exist?
 cache_dir

obscurerichard

slow

This bash script offers quick shortcuts to simulate slower network connections. It is useful when you need to simulate a wireless network on a Linux network server, especially when you are using a virtual machine guest on your local machine or in the cloud.

slow 3G                   # Slow network on default eth0 down to 3G wireless speeds
slow reset                # Reset connection for default eth0 to normal
slow vsat --latency=500ms # Simulate satellite internet  with a high latency
slow dsl -b 1mbps         # Simulate DSL with a slower speed than the default

slow modem-56k -d eth0 # Simulate a 56k modem on the eth1 device. eth0 is unchanged.

kwharrigan

#!/usr/bin/python
#Copyright (c) 2012 Kyle Harrigan
#
#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:
#