Anh Trinh ptgamr

Safest way to clean up boot partition - Ubuntu 14.04LTS-x64

Case I: if /boot is not 100% full and apt is working

1. Check the current kernel version

$ uname -r

Tether is a great library for positioning stuff (tooltips, modals, hints, etc) in your web app.

But, as I use React, it was pretty problematic for me, as Tether mutates the DOM and React breaks miserably when it sees mutated DOM. The solution is to have the tethered element outside the part of the DOM tree which is controlled by React (in this case, I use document.body).

That's why I created 2 helpers to use Tether with React.

The first one, TetheredElement is a plain JS helper to create a new element, attach it to some other one via Tether, and populate it with some React component.

The second one, TetherTarget is a React component and it uses TetheredElement to integrate it further with React, so that you can attach components to each other with Tether, without leaving the cozy React/JSX world and worrying about manual DOM operations. Just write:

Data Down / Actions Up
- http://emberjs.jsbin.com/nayaho/edit?html,js - Interdependent select boxes. No observers.
- http://ember-twiddle.com/2d7246875098d0dbb4a4 - One Way Input
Other
- http://emberjs.jsbin.com/rwjblue/251/edit?html,js,output - Opening a window and communicate with it.
- http://emberjs.jsbin.com/rwjblue/55/edit - Using liquid-fire animations in globals mode.
- http://emberjs.jsbin.com/rwjblue/593/edit - Modify computed dependent keys after initialization.
- http://emberjs.jsbin.com/siforo/edit?js,output - Define computed property after object initialization.
http://emberjs.jsbin.com/rwjblue/299/edit?js,output - simplified version of ic-ajax

	ffmpeg -re \
	# -re (input)
	# Read input at native frame rate. Mainly used to simulate a grab device, or live input stream (e.g. when reading from a file). Should not be used with actual grab devices or live input streams (where it can cause packet loss). By default ffmpeg attempts to read the input(s) as fast as possible. This option will slow down the reading of the input(s) to the native frame rate of the input(s). It is useful for real-time output (e.g. live streaming).
	# (!) Turns out this will interrupt the stream by the audio input, making the output stream fps looks extremely low
	-pix_fmt uyuv442 \
	-framerate 30 \
	-f avfoundation \
	# Pixel format & Framerate for FFMPEG-device: https://www.ffmpeg.org/ffmpeg-devices.html#avfoundation
	-i "0" \
	# Use input "0" from avfoundation

	/**
	* Draw an arrowhead on a line on an HTML5 canvas.
	*
	* Based almost entirely off of http://stackoverflow.com/a/36805543/281460 with some modifications
	* for readability and ease of use.
	*
	* @param context The drawing context on which to put the arrowhead.
	* @param from A point, specified as an object with 'x' and 'y' properties, where the arrow starts
	* (not the arrowhead, the arrow itself).
	* @param to A point, specified as an object with 'x' and 'y' properties, where the arrow ends

	// Problem happens regardless of duration, but unless using
	// the `.velocity-animating` CSS hack it is easier to see with longer durations.
	const options = {duration: 1000, easing: 'easeInOutQuad'};

	export default function(){
	this.transition(
	// this works
	//this.use('fade')

	// this has a glitch; can see second copy/ghost of modal in top left when closing

	# Configuration for Alacritty, the GPU enhanced terminal emulator


	# Any items in the `env` entry below will be added as
	# environment variables. Some entries may override variables
	# set by alacritty it self.
	env:
	# TERM env customization. Default is xterm-256color
	# Note: the default TERM value `xterm-256color` does not
	# specify all features alacritty supports. This does pose

	[https://gist.github.com/stephou0104/233b5c99884f1d8c8b8b#file-ubuntu-compass-ruby]

	sudo apt-get update
	sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties
	sudo apt-get install libgdbm-dev libncurses5-dev automake libtool bison libffi-dev

	curl -L https://get.rvm.io \| bash -s stable
	gpg2 --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
	source ~/.rvm/scripts/rvm
	echo "source ~/.rvm/scripts/rvm" >> ~/.bashrc

	# clean everything up
	echo "killing mongod and mongos"
	killall mongod
	killall mongos
	echo "removing data files"
	rm -rf data/config
	rm -rf data/shard*

	# For mac make sure rlimits are high enough to open all necessary connections
	ulimit -n 2048

	export http_proxy=
	export https_proxy=

	curl -XDELETE 'http://localhost:9200/test/'

	echo "Creating the mapping"
	curl -XPUT 'http://localhost:9200/test/?pretty=1' -d '
	{
	"mappings" : {
	"member" : {