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WARNING

May contain out of date information. Check the comments below!

The list of actions listed below was taken mostly from Book Of Zeus with minor modifications and did the job well for Ubuntu version, which was available at that moment (May 2016). This gist was created for internal use and was never meant to be discovered by the web, although Google managed to find and index this page, which was a great surprise for me. Please check the original source for the updated information (links are provided in most of the sections), and read the comments below: they provide more details about the usage experience.

System Updates

http://bookofzeus.com/harden-ubuntu/initial-setup/system-updates/

Keeping the system updated is vital before starting anything on your system. This will prevent people to use known vulnerabilities to enter in your system.

What this does:

Within an <ion-scroll>, this directive creates sticky item headers that get bumped out of the way by the next item.

Demo: http://cl.ly/2u2X390s0H1a

Requirements:

Needs UnderscoreJS for its _.throttle utility.
Must be used within an or

A Hacker's Ongoing Review for Lenovo ThinkPad X230

For Arch Linux Wiki: https://wiki.archlinux.org/index.php/ThinkPad_X230

Upate Aug 30, 2014 The machine died. Hopefully it enjoyed it short life!

Update: Aug 02, 2014 One early morning, the machine died after waking up from to cold unsuspend. It didn't start after then. Even couldn't get into POST. Power LED only lit for a second or two. Hard reset of 30 seconds also failed. Before declaring motherboard totally toasted, gave it a last try as suggested by our good ol' friend Pablo Stafforini. Took it a apart, unplugged battery and CMOS battery and let it sit for nearly 11 hours. It WORKED like a preposterous CPR supposedly to a machine! What a joke ;)

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns                     on recent CPU
L2 cache reference ........................... 7 ns                     14x L1 cache
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns                     20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs 4X memory

	#!/usr/bin/env python

	import pyaudio
	import socket
	import sys

	FORMAT = pyaudio.paInt16
	CHANNELS = 1
	RATE = 44100
	CHUNK = 4096

	# Note – this is not a bash script (some of the steps require reboot)
	# I named it .sh just so Github does correct syntax highlighting.
	#
	# This is also available as an AMI in us-east-1 (virginia): ami-cf5028a5
	#
	# The CUDA part is mostly based on this excellent blog post:
	# http://tleyden.github.io/blog/2014/10/25/cuda-6-dot-5-on-aws-gpu-instance-running-ubuntu-14-dot-04/

	# Install various packages
	sudo apt-get update

	"""
	Minimal character-level Vanilla RNN model. Written by Andrej Karpathy (@karpathy)
	BSD License
	"""
	import numpy as np

	# data I/O
	data = open('input.txt', 'r').read() # should be simple plain text file
	chars = list(set(data))
	data_size, vocab_size = len(data), len(chars)

	; ___ _ __ ___ __ ___
	; / __\|_ _ __ _\| \|_____ / /\| __\|/ \_ )
	; \__ \ ' \/ _` \| / / -_) _ \__ \ () / /
	; \|___/_\|\|_\__,_\|_\_\___\___/___/\__/___\|

	; An annotated version of the snake example from Nick Morgan's 6502 assembly tutorial
	; on http://skilldrick.github.io/easy6502/ that I created as an exercise for myself
	; to learn a little bit about assembly. I think I understood everything, but I may
	; also be completely wrong :-)

	'use strict'

	angular.module('app')
	.directive 'keyboardListener', [ '$rootScope', ($rootScope) ->

	restrict: 'A'

	link: ($scope, $element, attrs) ->

	_height = undefined