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// [START initialize_firebase_in_sw]
// Give the service worker access to Firebase Messaging.
// Note that you can only use Firebase Messaging here, other Firebase libraries
// are not available in the service worker.
importScripts('https://www.gstatic.com/firebasejs/3.5.2/firebase-app.js');
importScripts('https://www.gstatic.com/firebasejs/3.5.2/firebase-messaging.js');

// Initialize the Firebase app in the service worker by passing in the
// messagingSenderId.
firebase.initializeApp({

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#
# Assumes an independent box (we'll call this one "graphite")
#

# Stay up to date
sudo apt-get update
sudo apt-get upgrade

# Install git
sudo apt-get install g++ curl libssl-dev -y

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Go / C++ bindings example

This is an example of Go code calling to a C++ library with a C wrapper.

Build

go build  # this only ensures it compiles

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$ curl -C - https://download.java.net/java/ga/jdk11/openjdk-11_osx-x64_bin.tar.gz -O openjdk-11_osx-x64_bin.tar.gz
$ tar xf openjdk-11_osx-x64_bin.tar.gz
$ sudo mv jdk-11.jdk /Library/Java/JavaVirtualMachines/
$ java -version
openjdk version "11" 2018-09-25
OpenJDK Runtime Environment 18.9 (build 11+28)
OpenJDK 64-Bit Server VM 18.9 (build 11+28, mixed mode)

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Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

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PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

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import pyaudio
import wave
 
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 44100
CHUNK = 1024
RECORD_SECONDS = 5
WAVE_OUTPUT_FILENAME = "file.wav"
 

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global
  tune.ssl.default-dh-param 1024
 
defaults
  timeout connect 10000ms
  timeout client 60000ms
  timeout server 60000ms
 
frontend fe_http
  mode http

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telegraf:
  image: telegraf
  restart: always
  environment:
    HOST_PROC: /rootfs/proc
    HOST_SYS: /rootfs/sys
    HOST_ETC: /rootfs/etc
  hostname: localhost
  volumes:
   - ./telegraf/telegraf.conf:/etc/telegraf/telegraf.conf:ro

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clojure higher-order functions