Nikolay Ignatev cyb3rD

How to Run a Script as a Service in Raspberry Pi - Raspbian Jessie

By: Diego Acuña

Original Article: http://www.diegoacuna.me/how-to-run-a-script-as-a-service-in-raspberry-pi-raspbian-jessie/

A pretty common task when using this device, is to run some script (for example a python script) as a service in the operating system so it can start on boot, stop and restart using systemctl and more. In this post I'm going to explain how to set a little script as a service using Raspbian Jessie in a Raspberry Pi.

Example Python Script

Python Flask + nginx + gunicorn

Setting up a python flask web application using nginx, gunicorn and systemd on a Rasperry Pi

In the following, we assume a working Flask application with the name of SCRIPT_NAME. First we need to install a couple of things:

sudo apt-get update && sudo apt-get upgrade

Installing nginx will fail if apache is running. If your installation breaks half ways, then remove the fragments, stop apache (and I actually suggest removing it in case not needed) and then install nginx again:

sudo apt-get remove nginx* --purge

sudo /etc/init.d/apache2 stop

This is my personal list of functions that I wrote for converting `mov` files to `mp4`!

Command Flags

Flag	Options	Description
`-codec:a`	libfaac, libfdk_aac, libvorbis	Audio Codec
`-quality`	best, good, realtime	Video Quality
`-b:a`	128k, 192k, 256k, 320k	Audio Bitrate
`-codec:v`	mpeg4, libx264, libvpx-vp9	Video Codec

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes

By Edmond Lau
Highly Recommended 👍
http://www.theeffectiveengineer.com/

What's an Effective Engineer?

If you're using SystemJS in the browser, you'll want to update your System config to point at the bundles, if you're not already.

System.config({
  //use typescript for simple compilation (no typechecking)
  //transpiler: 'typescript',
  //typescript compiler options
  //typescriptOptions: {
    //emitDecoratorMetadata: true
  //},

JavaScript courses as on March 2016

Short link: www.bit.ly/js-courses-list (NB: if you click it from this document recursion may occur :) )

Russian:

name or author	url	duration, week/month	price, rub
Hexlet	https://ru.hexlet.io/professions/frontend
Hexlet	https://ru.hexlet.io/professions/frontend	8m	$40/m

Simple hover effect

Example of hover image effect on listitem

A Pen by Nikolay on CodePen.

License.

Angular2 + JSPM cheat sheet

First time setup

install jspm beta: npm install -g jspm@beta
set up your project: jspm init
install dependencies: jspm install angular2 reflect-metadata zone.js es6-shim

This will create a jspm_packages folder, and a config.js file.

Open the config.js file - this file manages options for the System.js loader - tweak it as appropriate

	""" Shows how to use flask and matplotlib together.

	Shows SVG, and png.
	The SVG is easier to style with CSS, and hook JS events to in browser.

	python3 -m venv venv
	. ./venv/bin/activate
	pip install flask matplotlib
	python flask_matplotlib.py
	"""

	# As per this guide -- http://raspberrypi.stackexchange.com/questions/3617/how-to-install-unrar-nonfree#3618

	# Uninstall unrar-free.
	sudo apt-get remove unrar-free

	# Make sure you have a source repository by editing /etc/apt/sources.list.
	cat /etc/apt/sources.list

	# Sync the apt database.
	sudo apt-get update