diogoleal

Here are several different ways to test a TCP port without telnet.

BASH (man page)

$ cat < /dev/tcp/127.0.0.1/22
SSH-2.0-OpenSSH_5.3
^C

$ cat &lt; /dev/tcp/127.0.0.1/23

diogoleal

autoload -Uz compinit
compinit

CASE_SENSITIVE="false"

HISTSIZE=10000
HISTFILE=~/.zsh_history
SAVEHIST=10000

autoload -U promptinit; promptinit

diogoleal

Keybase proof

I hereby claim:

• I am diogoleal on github.
• I am diogoleal (https://keybase.io/diogoleal) on keybase.
• I have a public key whose fingerprint is 4265 C84A D88B 6B22 E101 0FC0 866C 4A5E 4D7C F362

To claim this, I am signing this object:

diogoleal

Name:           pev
Version:        0.70
Release:        1
License:        GPL3
URL:            http://pev.sf.net/
Requires:       readline
BuildRequires:  pcre-devel openssl-devel
Source0:        http://nbtelecom.dl.sourceforge.net/project/pev/pev-%{version}/pev-%{version}.tar.gz
Summary:        The PE file analysis toolkit

diogoleal

# Template file for 'boswars'
pkgname=boswars
version=2.7
revision=1
wrksrc=${pkgname}-${version}-src/
makedepends="lua51-devel libtheora-devel libogg-devel libpng-devel SDL-devel libvorbis-devel libX11-devel MesaLib-devel scons libpng-progs pkg-config libGL"
depends="libtheora libogg libpng libvorbis"
short_desc="A futuristic real-time strategy game (RTS)"
maintainer="Diogo Leal <diogo@diogoleal.com>"
license="GPL-2"

diogoleal

! xterm color scheme — Make all 16 beautiful.
!
! Suited for black background, but includes disabled alternative light scheme.
!
! Open this file with gvim to enable <Leader><F2> color mode.
!
! Use `xfontsel`, `xlsfonts`, and `fc-list` to find other fonts.
!
! On Ubuntu I have to name this file ‘~/.Xdefaults-$(hostname)’
!

diogoleal

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

diogoleal

BOX_NAME=vagrant-build
BASE_DIR="`pwd`/machines"
BOX_DIR="${BASE_DIR}/${BOX_NAME}"

mkdir -p ${BASE_DIR}

VBoxManage createvm --name "${BOX_NAME}" --ostype RedHat_64 --basefolder ${BASE_DIR}
VBoxManage registervm "${BOX_DIR}/${BOX_NAME}.vbox"

mkdir -p tmp

diogoleal

#!/bin/sh

# Sublime Text 3 install with Package Control
# http://simonewebdesign.it/install-sublime-text-3-on-linux/

# Run this script with:
# $ curl -L git.io/sublimetext | sh


# Detect the architecture

diogoleal

Yesterday I upgraded our running elasticsearch cluster on a site which serves a few million search requests a day, with zero downtime. I've been asked to describe the process, hence this blogpost.

To make it more complicated, the cluster was running elasticsearch version 0.17.8 (released 6 Oct 2011) and I upgraded it to the latest 0.19.10. There have been 21 releases between those two versions, with a lot of functional changes, so I needed to be ready to roll back if necessary.

Our setup:

• elasticsearch

We run elasticsearch on two biggish boxes: 16 cores plus 32GB of RAM. All indices have 1 replica, so all data is stored on both boxes (about 45GB of data). The primary data for our main indices is also stored in our database. We have a few other indices whose data is stored only in elasticsearch, but are updated once daily only. Finally, we store our sessions in elasticsearch, but active sessions are cached in memcached.