musha68k

musha68k

How to fix skewed system times on multiple vagrant instances 🍻

Set current date of darwin/osx on all local vagrant instances:

date | pbcopy && vagrant status | grep running | awk '{print $1}' | xargs -I {} vagrant ssh {} -c "sudo date --s \"$(pbpaste)\""

Set current date of darwin/osx on all vagrant instances:

date | pbcopy && vagrant global-status | grep running | awk '{print $1}' | xargs -I {} vagrant ssh {} -c "sudo date --s \"$(pbpaste)\""

musha68k

let rec fold ~init ~f = function
    [] -> init
  | x :: xs -> fold ~init:(f init x) ~f xs

let length xs =
  xs
  |> fold ~init:0 ~f:(fun acc _ -> acc + 1)

let reverse xs =
  xs

musha68k

#!/usr/bin/env ruby

require 'vpim'
require 'vcardio'

files = Dir.glob "*.vcf"

vcards = files.map do |f|
  vc_old = Vpim::Vcard.decode(File.read(f))[0]
  # proper vcard 4.0 wasn't accepted by the iCLoud web-interface

musha68k

Keybase proof

I hereby claim:

• I am musha68k on github.
• I am musha68k (https://keybase.io/musha68k) on keybase.
• I have a public key whose fingerprint is 3AC3 9645 FDE9 3C57 6A42 451A 56DA C4A3 1372 6D99

To claim this, I am signing this object:

musha68k

Premise

1. our base operating system is Mac OSX which we will simply call osx

2. on top of osx we run a hypervisor (e.g. xhyve, vmware, virtualbox)

3. on top of our hypervisor we are running a virtual machine with CoreOS as our docker_engine (with the help of or without vagrant)

4. on top of our docker_engine we run an arbitrary set of docker_container instances most of which are comprised of a "bespoke" docker_image of our own; a certain "microservice" in development

musha68k

# the shotgun way..
exec = require('child_process').exec
exec('source ~/.zshrc')

musha68k

```
notify_me() {
  osascript -e "display notification \"$1\" with title \"$2\""
}
alias notify_me=notify_me
```

musha68k

We need a Docker container engine which will enable us to run docker containers on OSX.

So the first step to get there is to create a Vagrant virtual machine image with the provider of your choice.

Vagrantfile:

```
Vagrant.configure(2) do |config|

  config.vm.box = 'ubuntu/trusty64'

musha68k

var a = function(){
	var index;

	function log(){
	  console.log(index);
	}

	function iterate(){
	  log();
	  if(index>1) setTimeout(iterate, 1000);