MOON-CLJ

Use these rapid keyboard shortcuts to control the GitHub Atom text editor on macOS.

Key to the Keys

⌘ : Command key
⌃ : Control key
⌫ : Delete key
← : Left arrow key
→ : Right arrow key
↑ : Up arrow key

Install MySQL on macOS Sierra

This procedure explains how to install MySQL using Homebrew on macOS Sierra 10.12

Install Homebrew

Installing Homebrew is effortless, open Terminal and enter :
$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Note: Homebrew will download and install Command Line Tools for Xcode 8.0 as part of the installation process.

Install MySQL

At this time of writing, Homebrew has MySQL version 5.7.15 as default formulae in its main repository :

IP Tables (iptables) Cheat Sheet

IPTables is the Firewall service that is available in a lot of different Linux Distributions. While modifiying it might seem daunting at first, this Cheat Sheet should be able to show you just how easy it is to use and how quickly you can be on your way mucking around with your firewall.

Resources

The following list is a great set of documentation for iptables. I used them to compile this documentation.

How-To Geek: The Beginner’s Guide to iptables, the Linux Firewall: https://www.howtogeek.com/177621/the-beginners-guide-to-iptables-the-linux-firewall/
IPTables Essentials: Common Firewall Rules and COmmands https://www.digitalocean.com/community/tutorials/iptables-essentials-common-firewall-rules-and-commands

	#!/usr/bin/env python
	# encoding: utf-8
	#
	# Requires statlib http://code.google.com/p/python-statlib/
	"""
	process_tornado_bm.py

	Created by Jacob Kristhammar on 2010-12-09.
	"""

	System
	======

	Windows 7
	Python 2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 32 bit (Intel)]


	Small data
	==========


	0 = Success
	1 = Operation not permitted
	2 = No such file or directory
	3 = No such process
	4 = Interrupted system call
	5 = Input/output error
	6 = No such device or address
	7 = Argument list too long
	8 = Exec format error

	Use tcpdump to monitor mysql

	# Capture the packets
	sudo tcpdump -i eth0 port 3306 -s 65535 -x -n -q -tttt > tcpdump.out

	# analyze all the requests from a given host
	pt-query-digest --type=tcpdump --filter '($event->{host} \|\| $event->{ip} \|\| "") =~ m/192.168.248.64/' tcpdump.out

	{# style 1 - long form #}
	{% if filepath == '/var/opt/tomcat_1' %}
	{% set tomcat_value = tomcat_1_value %}
	{% else %}
	{% set tomcat_value = tomcat_2_value %}
	{% endif %}

	{# style 2 - short form #}
	{% set tomcat_value = tomcat_1_value if (filepath == '/var/opt/tomcat_1') else tomcat_2_value %}

	import itertools


	ALPHABET = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
	ALPHABET_LEN = len(ALPHABET)
	ALPHABET_INDEX = {c: i for i, c in enumerate(ALPHABET)}


	def a2n(letter):
	return ALPHABET_INDEX[letter]

	# Install tmux 2.8 on Centos

	# install deps
	yum install gcc kernel-devel make ncurses-devel

	# cd src
	cd /usr/local/src

	# DOWNLOAD SOURCES FOR LIBEVENT AND MAKE AND INSTALL
	curl -LO https://github.com/libevent/libevent/releases/download/release-2.1.8-stable/libevent-2.1.8-stable.tar.gz