Dee Cheung DC3

Chromium OS ft. Docker

Chromium OS is cool. Chromium OS with crouton is cooler. Chromium OS with Docker is even cooler. This is specifically a guide for the Chromebook Pixel 2 (2015), but I can't think of any reason it wouldn't work with other devices.

Create a build environment
Customize the kernel
Build Chromium OS
Flash Chromium OS to USB
Install Chromium OS

Browser histories

Unless you are using Safari on OSX, most browsers will have some kind of free plugin that you can use to export the browser's history. So that's probably the easiest way. The harder way, which seems to be what Safari wants is a bit more hacky but it will also work for other browsers. Turns out that most of them, including Safari, have their history saved in some kind of sqlite database file somewhere in your home directory.

The OSX Finder cheats a little bit and doesn't show us all the files that actually exist on our drive. It tries to protect us from ourselves by hiding some system and application-specific files. You can work around this by either using the terminal (my preferred method) or by using the Cmd+Shft+G in Finder.

Once you locate the file containing the browser's history, copy it to make a backup just in case we screw up.

Python VS ES6 syntax comparison

Python syntax here : 2.7 - online REPL

Javascript ES6 via Babel transpilation - online REPL

Imports

import math

Publics repos

With Ruby 1.8 (default version on MacOS) :

sudo gem install json
curl -s https://api.github.com/orgs/[ORGANIZATION]/repos | ruby -rubygems -e 'require “json”; JSON.load(STDIN.read).each {|repo| %x[git clone #{repo["ssh_url"]} ]}'

With Ruby 1.9+, the json library is by default thus you just use :

Notes: Arch Linux on Chromebook Pixel 2015

To install another OS, follow the instructions at https://www.chromium.org/chromium-os/developer-information-for-chrome-os-devices/chromebook-pixel-2015 to enable developer mode, after which you should be able to hit Ctrl+L on the boot screen to launch SeaBIOS, which will boot external media (BIOS only, not GPT). You’ll be able to boot the Arch installation image from a USB stick using this.

Currently, I’ve got GRUB running off an SD card, which I boot using SeaBIOS. My system is installed on the internal drive, but GRUB won’t work from there. My technique at https://gist.github.com/bodil/b14a398189e5643ee03e has so far failed to yield a booting kernel on the internal drive, which is somewhat annoying, but as I keep the SD card permanently inserted anyway, it hasn’t been bothersome.

Arch has a wiki page on the Pixel 2015: https://wiki.archlinux.org/index.php/Chromebook_Pixel_2

The stock kernel (as of 4.0.5) lacks support for some h

=========================================== Installing Arch Linux on Chromebook Pixel 2

Screencapture and animated gifs

I say "animated gif" but in reality I think it's irresponsible to be serving "real" GIF files to people now. You should be serving gfy's, gifv's, webm, mp4s, whatever. They're a fraction of the filesize making it easier for you to deliver high fidelity, full color animation very quickly, especially on bad mobile connections. (But I suppose if you're just doing this for small audiences (like bug reporting), then LICEcap is a good solution).

Capturing (Easy)

Launch quicktime player
do Screen recording

	{
	// The plugin looks for a .jsbeautifyrc file in the same directory as the
	// source file you're prettifying (or any directory above if it doesn't exist,
	// or in your home folder if everything else fails) and uses those options
	// along the default ones.

	// Details: https://github.com/victorporof/Sublime-HTMLPrettify#using-your-own-jsbeautifyrc-options
	// Documentation: https://github.com/einars/js-beautify/
	"html": {
	"allowed_file_extensions": ["htm", "html", "xhtml", "shtml", "xml", "svg", "dust"],

	# curl not smart enough for ipv6, so force ipv4
	# on my mac I started to get localhost connect failure
	#
	# curl: (7) Failed to connect to localhost port 9031: Connection refused


	echo '--ipv4' >> ~/.curlrc

	/* bling.js */
	window.$ = document.querySelector.bind(document);
	window.$$ = document.querySelectorAll.bind(document);
	Node.prototype.on = window.on = function(name, fn) { this.addEventListener(name, fn); };
	NodeList.prototype.__proto__ = Array.prototype;
	NodeList.prototype.on = function(name, fn) { this.forEach((elem) => elem.on(name, fn)); };