pengux

Installing tmux-256color for macOS

macOS has ncurses version 5.7 which doesn't ship the terminfo description for tmux. There're two ways that can help you to solve this problem.

The Fast Blazing Solution

Instead of tmux-256color you can use screen-256color, place this command into your ~/.tmux.conf.

set-option -g default-terminal "screen-256color"

pengux

Keybase proof

I hereby claim:

• I am pengux on github.
• I am pengux (https://keybase.io/pengux) on keybase.
• I have a public key ASBVZUnLrYSubjstIltnkb0PofUs5qFk78GBIFMWbjsnTwo

To claim this, I am signing this object:

pengux

;;; prettier-js.el --- utility functions to format reason code

;; Copyright (c) 2014 The go-mode Authors. All rights reserved.
;; Portions Copyright (c) 2015-present, Facebook, Inc. All rights reserved.

;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following conditions are
;; met:

;; * Redistributions of source code must retain the above copyright

pengux

War Games 01, Computer Security and Hacking

We are at war

• Blackhat, Whitehat, government, activists hackers constantly trying to get access to computers and data. Sony, Panama Documents, USA, Philippines
• Reasons can be money, political, religious, military, love, whatever...
• Computers are weapons and also targets. Data source, botnet, proxy, spam, DDOS
• Always need to think about security and common sense goes a long way!

Basic server security

pengux

# http://techblog.netflix.com/2015/11/linux-performance-analysis-in-60s.html
# http://techblog.netflix.com/2015/08/netflix-at-velocity-2015-linux.html
uptime
dmesg | tail
vmstat 1
mpstat -P ALL 1
pidstat 1
iostat -xz 1
free -m
sar -n DEV 1

pengux

SSL, TLS and Let's Encrypt

Background

• SSL = Secure Socket Layer (obsolete) and TLS = Transport Layer Security
• Netscape developed SSL. v1.0 never published, v2.0 is weak and deprecated in 2011. v3.0 is vulnerable to the POODLE attack and deprecated in 2015. Don't use these anymore!
• TLS v1.0, v1.1 and v1.2 are still considered to be secure and should be used. Higher (versions) are better.
• Encrypts communication between for example a client and a server. Can also verify that the server really is the one stated.
• Can use different ciphers (encryption algorithm)
• Client and server negotiate about ciphers and keys during the start of the session using the TLS handshake protocol
• Used with many protocols, not just HTTP.

pengux

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

pengux

/*global window */
define(['angular', 'services'], function(angular, services) {
	'use strict';

	/* Directives */

	angular.module('app.directives', [])
	.directive('ngConfirmClick', [
		function(){
			return {