mill1000

About

This gist will show how to setup Raspbian Stretch as a headless Bluetooth A2DP audio sink. This will allow your phone, laptop or other Bluetooth device to play audio wirelessly through a Rasperry Pi.

Motivation

A quick search will turn up a plethora of tutorials on setting up A2DP on the Raspberry Pi. However, I felt this gist was necessary because this solution is:

• Automatic & Headless - Once setup, the system is entirely automatic. No user iteration is required to pair, connect or start playback. Therefore the Raspberry Pi can be run headless.
• Simple - This solution has few dependencies, readily available packages and minimal configuration.
• Up to date - As of December 2017. Written for Raspbian Stretch & Bluez 5.43

Prerequisites

oleq

What is this all about?

This tutorial will turn your Raspberry PI into a simple Bluetooth audio receiver, which plays music through connected speakers. It's like a regular car audio system, but it can be used anywhere and it's a good value.

   Audio source (i.e. smartphone) 
                |
                v
 (((  Wireless Bluetooth Channel  )))
 |

progrium

import requests

from checks import AgentCheck

class ConsulCheck(AgentCheck):
	def should_check(self):
		r = requests.get(self.init_config["consul_url"] + "/v1/agent/self")
		if r.status_code != 200:
			return False
		agent = r.json()

rodneyrehm

some tools for diagrams in software documentation

Diagrams For Documentation

Obvious Choices

• Graphviz
• Pandoc

ASCII

mbabineau

{
  "AWSTemplateFormatVersion" : "2010-09-09",

  "Description" : "Launches a Docker Registry.",

  "Parameters" : {
    "InstanceType" : {
      "Description" : "EC2 instance type",
      "Type" : "String",
      "Default" : "m1.small",

danrigsby

packer build packer.json 2>&1 | sudo tee output.txt
tail -2 output.txt | head -2 | awk 'match($0, /ami-.*/) { print substr($0, RSTART, RLENGTH) }' > sudo ami.txt

ingoe

    describe('window.postMessage test', function() {
        var o;
        beforeEach(function(done) {
            o = {
              f: function() {}
            };
            // won't pass the spec
            // window.addEventListener('message', o.f, false);
            spyOn(o, 'f').and.callFake(function() {
                done();

DanHerbert

OBSOLETE

This entire guide is based on an old version of Homebrew/Node and no longer applies. It was only ever intended to fix a specific error message which has since been fixed. I've kept it here for historical purposes, but it should no longer be used. Homebrew maintainers have fixed things and the options mentioned don't exist and won't work.

I still believe it is better to manually install npm separately since having a generic package manager maintain another package manager is a bad idea, but the instructions below don't explain how to do that.

Fixing npm On Mac OS X for Homebrew Users

Installing node through Homebrew can cause problems with npm for globally installed packages. To fix it quickly, use the solution below. An explanation is also included at the end of this document.

rhenning

$ aws opsworks describe-stacks
{
    "Stacks": [
        {
            "ServiceRoleArn": "arn:aws:iam::047170177871:role/aws-opsworks-service-role", 
            "StackId": "575e1389-1df3-427d-99d3-d60f89a41442", 
            "DefaultRootDeviceType": "ebs", 
            "Name": "rhenning_test", 
            "ConfigurationManager": {
                "Version": "11.4", 

wsargent

303 See Other

Location: https://github.com/wsargent/docker-cheat-sheet

Hi there!

The docker cheat sheet has moved to a Github project under https://github.com/wsargent/docker-cheat-sheet.

Please click on the link above to go to the cheat sheet.