javier arias losada javierarilos

GIT fast intro for non dummies

Who is this guide for

This is a small introduction for people that maybe has been playing a little bit with GIT without reading a lot about it or is quite experienced with other VCS (Version Control Systems).

We will assume that you already have GIT installed Installing Git, and you know how to work with the command line.

Some Git good practices

This should be the last section of the guide, but since this is a guide for non-dummies, you already know many of the things explained below. So, for that reason I want you to read this before getting bored with the rest of the guide.

Positive good practices

Docker as a packaging deployment and execution environment

Before starting, Docker is a very interesting, even revolutionary technology. And is so powerful that has many use-cases and ways to explain what it does.

Here, we are talking about Docker as a tool for packaging and executing our applications, whatever they are.

What is Docker?

"Docker allows you to package an application with all of its dependencies into a standardized unit for software development."

When Docker was created, many people sold it as 'lighter Virtual Machines' and, while that is true, Docker appeal lays in its ability not to just RUN but to PACKAGE and DEPLOY applications in an isolated and repeatable way.

	FILE="20150511-10_19_36-2015-05-11 10.19.23.jpg"
	DATETIMEORIGINAL=$(exiftool -p '$DateTimeOriginal' "$FILE")
	DATE=$(echo $DATETIMEORIGINAL \| awk '{print $1}' \| tr -d ':')
	TIME=$(echo $DATETIMEORIGINAL \| awk '{print $2}' \| tr ':' '_')
	NEWNAME=$DATE-$TIME-$FILE

	<property name="custom" type="empty
	<property name="<Alt>Print" type="string" value="xfce4-screenshooter -w"/>
	<property name="<Control><Alt>L" type="string" value="xfce4-session-logout"/>
	<property name="<Super>n" type="string" value="gnome-do"/>
	<property name="<Super>m" type="string" value="xfce4-popup-whiskermenu"/>
	<property name="<Super>c" type="string" value="xfce4-popup-clipman"/>
	<property name="<Super>t" type="string" value="terminator"/>
	<property name="<Super>Page_Up" type="string" value="amixer set Master 5%+ "/>
	<property name="<Super>Page_Down" type="string" value="amixer set Master 5%-"/>
	<property name="<Super>Home" type="string" value="amixer set Master toggle"/>

	#!/bin/bash
	#Description: xfconf-query to get the panel, and change its configuration
	#If it is not working, check you have xfce4-panel: xfconf-query should list it.
	#Then, check your panel name: xfconf-query -c xfce4-panel -l and modify it in the
	#commands.

	xfconf-query -c xfce4-panel -p /panels/panel-1/autohide -s false
	sleep 2
	xfconf-query -c xfce4-panel -p /panels/panel-1/autohide -s true

	#!/bin/bash
	#Description: Using notify-send, pop-up the current workspace number when changing workspaces
	#Requires: xfce4-notifyd, libnotify, wmctrl

	CURRENT_WORKSPACE=$(($(wmctrl -d \| grep \* \| cut -d' ' -f1)+1))
	while true
	do
	sleep 1
	NEW_WORKSPACE=$(($(wmctrl -d \| grep \* \| cut -d' ' -f1)+1))
	if [ $CURRENT_WORKSPACE -ne $NEW_WORKSPACE ]; then

	#!/usr/bin/env python3

	"""
	Recursively enters into a directory subdirs and does git pull --rebase
	"""
	import os
	import sys
	from subprocess import call

	// two options to compile:
	// gcc hello.cpp -o hello -x c++ -v -lstdc++
	// g++ hello.cpp -o hello
	// then execute:
	// ./hello
	#include <iostream>

	int main(void)
	{
	std::cout << "Hello World!";

	import subprocess
	p = subprocess.Popen(['ls', '-la'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
	o, e = p.communicate()

	print "Executed command ls -la with returncode", p.returncode
	print " stdout ", o
	print " error ", e

	/*
	Proof of concept of starting Apache Camel routes.

	Grabs all dependencies, starts Camel and adds two routes to it.
	- Timer to console
	- Websockets => RabbitMQ

	Usage:
	>>> groovy groovying_camel.groovy
	End with CTRL+C