JJ jairojunior

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

	require 'java'

	# setup executor
	java_import 'java.util.concurrent.ThreadPoolExecutor'
	java_import 'java.util.concurrent.TimeUnit'
	java_import 'java.util.concurrent.LinkedBlockingQueue'
	java_import 'java.util.concurrent.FutureTask'
	java_import 'java.util.concurrent.Callable'

	core_pool_size = 5

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	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 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	-- show running queries (pre 9.2)
	SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
	FROM pg_stat_activity
	WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
	ORDER BY query_start desc;

	-- show running queries (9.2)
	SELECT pid, age(clock_timestamp(), query_start), usename, query
	FROM pg_stat_activity
	WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'

	#!/usr/bin/env ruby

	require 'rubygems'
	require 'pp'
	require 'fog'
	require 'highline/import'

	def get_password(prompt="Enter password:")
	ask(prompt) {\|q\| q.echo = false}
	end

	# -- mode: ruby --
	# vi: set ft=ruby :

	# This configuration requires Vagrant 1.5 or newer and two plugins:
	#
	# vagrant plugin install vagrant-hosts ~> 2.1.4
	# vagrant plugin install vagrant-auto_network ~> 1.0.0
	#
	# After installation, the following steps will spin up a master and agent that
	# can communicate with each other:

	input {
	## WebLogic Server Log
	file {
	type => "weblogic"
	path => [ "/var/log/weblogic/domain/managedserver.log" ]
	codec => multiline {
	pattern => "^####"
	negate => true
	what => previous
	}

	#/bin/bash

	##########################################################
	### INTRODUCTION
	##########################################################
	: '
	Install and configure R (Redis) + ELK server from scratch on CentOS 6.5.

	* Logstash version 1.4.2
	* Elasticsearch version 1.3.2