artbikes

#!/bin/bash 

DATE=`date +"%a"`
DVOLNAME=datalv
LVOLNAME=journallv
VOLGR=datavg
DVOLPATH=/dev/$VOLGR/$DVOLNAME
LVOLPATH=/dev/$VOLGR/$LVOLNAME
DSNAME=`echo ${DVOLNAME}_ss_${DATE} | tr '[A-Z]' '[a-z]'`
LSNAME=`echo ${LVOLNAME}_ss_${DATE} | tr '[A-Z]' '[a-z]'`

artbikes

Installing My Blog

I want to install Ghost as my blog. I want the web server, ghost, and OS, all to receive security updates on a regular schedule without me having to muck with it. (I am willing for the blog to sometimes go down because of this.)

I'll eventually want monitoring and alerting, and backups of the blog entries; uploads of the static site to my web hosting company; automatic DNS configuration; updates of the base OS. But for now I'm modest, I just want Ghost and I want updates.

I want to do this all with Chef. I want to write the Ghost cookbook myself, not because the existing Ghost cookbook is bad, but because I want to get a real feel for how these get written.

Getting Started: Test Kitchen

artbikes

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"time"

	"github.com/goiot/devices/piglow"
	"golang.org/x/exp/io/i2c"

artbikes

One-liners

Reverse every line:

Input file:

$ cat foo
qwe
123

bar

artbikes

.

artbikes

db = connect("localhost:27017/test");
var cursor = db.unicorns.find({gender : "m"});
var total = 0;
while(cursor.hasNext()) {
  var obj = cursor.next();
  total += (obj.hits || 0);
}
print(total);

artbikes

// dsp-D8 Drum Chip (c) DSP Synthesizers 2015
// Free for non commercial use

// http://janostman.wordpress.com

#include <avr/interrupt.h>
#include <avr/io.h>
#include <avr/pgmspace.h>

artbikes

#include <Adafruit_NeoPixel.h>

#define PIN 3
#define LEDCOUNT 23
#define SPEED 5

const uint8_t PROGMEM gamma[] = {
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  1,
    1,  1,  1,  1,  1,  1,  1,  1,  1,  2,  2,  2,  2,  2,  2,  2,

artbikes

- action: ec2_facts

- apt: pkg=lvm2 state=present
- apt: pkg=mdadm state=present

- pip: name=boto state=latest

- ec2_vol: instance="{{ hostvars[inventory_hostname]['ansible_ec2_instance-id'] }}"
           volume_size=20
           device_name="{{ item }}"

artbikes

# knife cheat

## Search Examples

	knife search "name:ip*" 
	knife search "platform:ubuntu*"
	knife search "platform:*" -a macaddress
	knife search "platform:ubuntu*" -a uptime
	knife search "platform:ubuntu*" -a virtualization.system
	knife search "platform:ubuntu*" -a network.default_gateway