julianobarbosa

Screen Quick Reference

Basic

Description	Command
Start a new session with session name	screen -S <session_name>
List running sessions / screens	screen -ls
Attach to a running session	screen -x
Attach to a running session with name	screen -r

julianobarbosa

Question:
. How to run Ansible without specifying the inventory but the host directly?
. Run a playbook or command with arbitrary host not in the inventory hosts list?
. run ansible with arbitrary host/ip without inventory?

Answer:
Surprisingly, the trick is to append a ,
The host parameter preceding the , can be either a hostname or an IPv4/v6 address.

ansible all -i example.com,

julianobarbosa

#256 colors in putty, tmux/screen and vim There is a detailed answer on stackoverflow. If you are looking for a short one, here it is.

• putty

  Set Connection -> Data -> Terminal-type string to xterm-256color

• tmux

Add this line to ~/.tmux.conf

julianobarbosa

KEY=XXXXXXXXXXXX
HOST="https://metrics.crisidev.org"

mkdir -p dashboards && for dash in $(curl -k -H "Authorization: Bearer $KEY" $HOST/api/search\?query\=\& |tr ']' '\n' |cut -d "," -f 5 |grep slug |cut -d\" -f 4); do 
  curl -k -H "Authorization: Bearer $KEY" $HOST/api/dashboards/db/$dash > dashboards/$dash.json 
done

julianobarbosa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

julianobarbosa

# Install tmux on Centos release 6.5
# http://superuser.com/questions/738829/attempting-to-install-tmux-on-centos-6-4-or-centos-6-5-fails-with-error-evbuff
# 

# READ THIS FIRST!!!
# MAKE SURE YOU HAVE BUILD TOOLS/COMPILERS TO BUILD STUFF FROM SOURCES
# yum groupinstall "Development Tools"


# CD TO TEMPORARY DIRECTORY

julianobarbosa

#!/bin/sh
# EDIT this
[email protected]
PASSWORD=yoursecret
DOMAIN=example.dnsd.me

IP=`curl --silent http://myip.dnsdynamic.com/`
curl --silent --user "$EMAIL:$PASSWORD" -k "https://www.dnsdynamic.org/api/?hostname=$DOMAIN&myip=$IP"

julianobarbosa

#!/usr/bin/env sh                   
for p in $(opkg list-upgradable); do
  if [ "$p" != "-" ]; then                                    
    if [ "$(echo ${p:0:1} | sed -e 's/[0-9]//')" != "" ]; then
      echo "upgrading $p"
      opkg upgrade $p
    fi
  fi
done

julianobarbosa

#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
Zabbix SMTP Alert script for gmail.
"""

import sys
import smtplib
from email.MIMEText import MIMEText
from email.Header import Header

julianobarbosa

Install Terminator (shell)

sudo add-apt-repository ppa:gnome-terminator
sudo apt-get update
sudo apt-get install terminator

Terminator should be setup as default now. Restart your terminal (shortcut: "Ctrl+Alt+T").

Install ZSH