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How to resize a qcow2 disk image on Linux

This example takes olddisk.qcow2 and resizes it into newdisk.qcow2, extending one of the guest's partitions to fill the extra space.

1. qcow2 format

1.1. Verify the filesystems of olddisk.qcow2

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QUESTION 1
Which SysV init configuration file should be modified to disable the ctrl-alt-delete key combination?
A. /etc/keys
B. /proc/keys 
C. /etc/inittab 
D. /proc/inittab 
E. /etc/reboot

QUESTION 2
Which of the following information is stored within the BIOS? (Choose TWO correct answers.)

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1. Run npm install cordova-res --save-dev
2. Create 1024x1024px icon at resources/icon.png
3. Create 2732x2732px splash at resources/splash.png
4. Add "resources": "cordova-res ios && cordova-res android && node scripts/resources.js" to scripts in package.json
5. Copy resources.js file to scripts/resources.js
6. Run sudo chmod -R 777 scripts/resources.js
7. Run npm run resources

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acm.amazonaws.com
alexa-appkit.amazon.com
apigateway.amazonaws.com
application-autoscaling.amazonaws.com
appstream.application-autoscaling.amazonaws.com
appsync.amazonaws.com
athena.amazonaws.com
autoscaling.amazonaws.com
batch.amazonaws.com
channels.lex.amazonaws.com

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# List the ten latest ubuntu public images on AWS 
# Output similar to:
#   2017-09-26T16:18:51.000Z	ubuntu/images/hvm-ssd/ubuntu-zesty-17.04-amd64-server-20170922	hvm	True	ami-5cc00825
#   2017-09-21T21:20:20.000Z	ubuntu/images/hvm-ssd/ubuntu-xenial-16.04-amd64-server-20170919	hvm	True	ami-17d11e6e
#   2017-09-19T10:54:43.000Z	ubuntu/images/hvm-ssd/ubuntu-trusty-14.04-amd64-server-20170918	hvm	True	ami-e872bf91
#   2017-09-05T13:12:32.000Z	ubuntu/images/hvm-ssd/ubuntu-trusty-14.04-amd64-server-20170831	hvm	True	ami-01589c78
#   ...etc

aws ec2 describe-images \
  --filters Name=name,Values=ubuntu/images/hvm-ssd/ubuntu* \

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version: '2'
services:
    haproxy:
        image: haproxy:alpine
        volumes:
            - ./haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg
        ports:
            - "80:80"
        depends_on:
            - nginx

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Global installation of PHP tools with Composer

To install a composer package globally, you run the usual require command, but with the addition of the global modifier. So to install PHPUnit, you would run:

$ composer global require phpunit/phpunit
$ composer global require phpunit/dbunit
$ composer global require phing/phing
$ composer global require phpdocumentor/phpdocumentor
$ composer global require sebastian/phpcpd

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<?php
/**
 * Plugin Name: WooCommerce Subscription Length Extender
 * Description: Add a custom 36 month subscription length to WooCommerce Subscriptions (requires WC Subscriptions 1.4.4 or newer) to give the option of having a subscription expire after 36 months.
 * Author: Brent Shepherd
 * Version: 1.0
 * License: GPL v2
 */

function eg_extend_subscription_expiration_options( $subscription_lengths ) {

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Setting up a SSL Cert from Comodo

I use Namecheap.com as a registrar, and they resale SSL Certs from a number of other companies, including Comodo.

These are the steps I went through to set up an SSL cert.

Purchase the cert

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#!/bin/bash
GARBAGE="/var/lib/docker/aufs/diff"
du -hd 1 $GARBAGE | sort -hrk 1 | head -25
find $GARBAGE -maxdepth 1 -name *-removing -exec rm -rf '{}' \;